Free NEET Chemistry multiple-choice questions on Modern Periodic Table. Attempt each question and reveal the answer with a full explanation.
Identify the incorrect match for the name of the element and its IUPAC symbol. Unnilunium - Uuu Unniltrium - Unt Unnilhexium - Unh Ununnilium - Uun Which of the following sets of elements contains only metalloids? Si, Ge, As, Sb B, Al, Ga, In P, S, Se, Te C, Si, Ge, Sn In the modern periodic table, an element with the electronic configuration [Xe] 4f 7 5d 1 6s 2 is: Gadolinium Europium Terbium Lanthanum Maximum deviation from ideal gas is expected from H2(g) N2(g) CH4(g) NH3(g) Given van der Waals constant for NH3 , H2 , O2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied? O2 H2 NH3 CO2 Which one is not correct mathematical equation for Dalton’s Law of partial pressure? Here p = total pressure of gaseous mixture p = n 1 RT V + n 2 RT V + n 3 RT V p i = i p , where p i = partial pressure of i th gas i = mole fraction of i th gas in gaseous mixture p i = i p i , where i = mole fraction of i th gas in gaseous mixture p i = pressure of i th gas in pure state p = p 1 + p 2 + p 3 Which among the following electronic configurations belong to main group elements? A. [ Ne ]3s 1 B. [ Ar ]3d 34s 2 C. [ Kr ]4d 10 5s 25p 5 D. [ Ar ]3d 10 4s 1 E. [ Rn ]5f 06d 27s 2 Choose the correct answer from the option given below : A, C and D only B and E only A and C only D and E only Which element has the ground state electronic configuration [Kr] 4d 10 5s 0 ? Palladium ( Pd ) Nickel ( Ni ) Platinum ( Pt ) Silver ( Ag ) What is the correct ground state electronic configuration of Palladium ( Z = 46 )? [Kr] 4d 10 5s 0 [Kr] 4d 8 5s 2 [Kr] 4d 9 5s 1 [Xe] 4d 10 5s 0 The number of elements in the s, p, d, and f blocks of the modern periodic table are respectively: 14, 36, 40, 28 14, 30, 40, 28 12, 36, 40, 30 14, 36, 30, 28 Technetium ( Z = 43 ) is unique in the d -block because: It is the first element in the periodic table that is entirely synthetic and radioactive It has the highest melting point of all metals It is the only liquid transition metal It does not follow the Aufbau principle What is the name of the element with atomic number Z = 101 ? Mendelevium Nobelium Lawrencium Seaborgium The general electronic configuration of d-block elements is: (n-1)d 1-10 ns 1-2 (n-1)d 1-10 ns 2 (n-1)d 10 ns 1-2 nd 1-10 (n+1)s 0-2 The maximum number of elements in the 6th period of the periodic table is: 32 18 8 14 For which of the following elements is the value of Eka-Silicon applicable in Mendeleev's table? Germanium Gallium Scandium Technetium The element with atomic number 105 is named as: Dubnium Rutherfordium Seaborgium Bohrium Which of the following properties is periodic in nature? Atomic radius Radioactivity Atomic mass Isotopes The electronic configuration of an element is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 1 . To which group does it belong? 13 3 1 11 What is the name of the first man-made element in the periodic table? Technetium Promethium Neptunium Francium What is the IUPAC name for the element with atomic number Z = 106 ? Unnilhexium Unnilseptium Unnilpentium Unniloctium What is the IUPAC name of the element with atomic number 104? Unnilquadium Unnilpentium Unnilhexium Unniltrium The IUPAC name of the element with atomic number 118 is: Oganesson Tennessine Livermorium Moscovium Calculate the IUPAC symbol for the element with Z = 111 . Ruu Uuu Uun Uub Which of the following groups contains the 'Coinage Metals'? Group 11 Group 10 Group 12 Group 1 The element with the highest atomicity among the following is: Sulfur Phosphorus Oxygen Nitrogen Which of the following gaseous elements is diatomic? Chlorine Helium Argon Neon In the context of the periodic table, the term 'Pnictogens' refers to elements of: Group 15 Group 16 Group 14 Group 17 The IUPAC name and symbol for the element with atomic number Z = 112 are: Copernicium ( Cn ) Darmstadtium ( Ds ) Roentgenium ( Rg ) Flerovium ( Fl ) Which of the following sets represents a Dobereiner's Triad? Li, Na, K Mg, Al, Si C, N, O Fe, Co, Ni Newlands' Law of Octaves was found to be applicable only up to which element? Calcium Potassium Magnesium Chlorine The maximum number of elements possible in the 4th period of the periodic table is: 18 8 32 10 What is the total number of elements present in the 5 th period of the modern periodic table? 18 8 32 10 In the modern periodic table, the period indicates the value of: Principal quantum number ( n ) Azimuthal quantum number ( l ) Magnetic quantum number ( m l ) Spin quantum number ( s ) Among the following elements, which one has the highest melting point? Tungsten ( W ) Iron ( Fe ) Osmium ( Os ) Mercury ( Hg ) The element with atomic number Z = 110 has been named: Darmstadtium Roentgenium Hassium Meitnerium Trans-uranic elements are those elements that: Follow Uranium in the periodic table ( Z > 92 ) Precede Uranium in the periodic table Are found in nature abundantly Belong to the Lanthanoid series The atomic number of the element currently placed in Period 7, Group 18 is: 118 112 108 120 What is the IUPAC name of the element with atomic number Z = 115 ? Moscovium Nihonium Tennessine Oganesson Identify the IUPAC name for the element with Z = 109 . Meitnerium Hassium Darmstadtium Bohrium Mendeleev's Periodic Law was based on X , while the Modern Periodic Law is based on Y . Identify X and Y . X = Atomic Weight; Y = Atomic Number X = Atomic Number; Y = Atomic Weight X = Atomic Volume; Y = Electronic Configuration X = Atomic Weight; Y = Neutron Number The total number of elements present in the f -block of the periodic table is: 28 14 32 30 The element with atomic number Z = 113 , recently officially named, belongs to which group and period respectively? Group 13, Period 7 Group 15, Period 7 Group 13, Period 6 Group 14, Period 7 An element has the configuration [Ar] 3d 10 4s 2 4p 3 . It belongs to which group? 15 13 5 3 Which of the following is the first trans-uranic element discovered? Neptunium ( Np ) Plutonium ( Pu ) Americium ( Am ) Curium ( Cm ) Elements with the valence shell electronic configuration ns 2 np 3 are collectively known as: Pnictogens Chalcogens Halogens Noble gases Identify the period and group of Mercury ( Hg, Z = 80 ). Period 6, Group 12 Period 5, Group 12 Period 6, Group 10 Period 7, Group 12 Which halogen is a solid and exhibits a metallic luster at room temperature? Iodine Bromine Chlorine Astatine What is the IUPAC name of the element with atomic number 117? Ununseptium Ununhexium Ununoctium Unnilseptium In the modern periodic table, which group contains elements that are all radioactive? Actinoids Lanthanoids Halogens Noble gases What is the IUPAC name for the element with atomic number Z = 108 ? Unniloctium Unnilseptium Unnilenium Unnilhexium What is the IUPAC name of the element with atomic number 102? Unnilbium Unnilunium Unniltrium Unnilquadium The IUPAC name for the element with atomic number 107 is: Unnilseptium Unnilhexium Unniloctium Unnilpentium What is the maximum oxidation state exhibited by Xenon in its compounds? +8 +6 +4 +2 The elements in which the 4f subshell is progressively filled are called: Lanthanoids Actinoids Transition elements Halogens The correction factor ‘a’ to the ideal gas equation corresponds to Electric field present between the gas molecules Volume of the gas molecules Density of the gas molecules Forces of attraction between the gas molecules The IUPAC name of an element with atomic number 119 is unnilennium unununium ununoctium ununennium The element with atomic number Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration? Carbon family, [Rn] 5f 14 6d 10 7s 2 7p 2 Oxygen family, [Rn] 5f 14 6d 10 7s 2 7p 4 Nitrogen family, [Rn] 5f 14 6d 10 7s 2 7p 3 Halogen family, [Rn] 5f 14 6d 10 7s 2 7p 5 The electronic configuration of Gadolinium ( Z=64 ) is: [Xe] 4f 7 5d 1 6s 2 [Xe] 4f 8 6s 2 [Xe] 4f 7 5d 2 6s 1 [Xe] 4f 6 5d 2 6s 2 The electronic configuration of an element is 1s 2 2s 2 2p 6 3s 2 3p 3 . What is the atomic number of the element immediately below it in the same group? 33 31 34 49 Which of the following elements is a liquid at room temperature? Gallium Cesium Bromine All of these Which of the following is an incorrect statement about the p -block elements? The non-metallic character decreases down the group The oxidation state is always equal to the group number The last electron enters the p-orbital They include metals, non-metals, and metalloids The element with the highest density in the periodic table is: Osmium Platinum Lead Mercury The group in the periodic table that contains elements in all three physical states (solid, liquid, and gas) at room temperature is: Group 17 Group 1 Group 18 Group 15 The element with the electronic configuration [Rn] 5f 14 6d 1 7s 2 belongs to which group and period? Group 3, Period 7 Group 14, Period 7 Group 3, Period 6 Group 2, Period 7 The element Eka-Aluminum predicted by Mendeleev is now known as: Gallium Germanium Scandium Indium Match the following names with their IUPAC symbols for elements with Z > 100 : (i) Unnilunium (ii) Unnilquadium (iii) Unnilseptium (iv) Unnilennium (i)-Md, (ii)-Rf, (iii)-Bh, (iv)-Mt (i)-Md, (ii)-Db, (iii)-Bh, (iv)-Ds (i)-No, (ii)-Rf, (iii)-Sg, (iv)-Mt (i)-Lr, (ii)-Db, (iii)-Sg, (iv)-Hs The group number and period number of the element with atomic number 38 are respectively: 2, 5 2, 4 12, 5 12, 4 An element X belongs to the 4th period and 15th group of the periodic table. What is its electronic configuration? [Ar] 3d 10 4s 2 4p 3 [Kr] 4d 10 5s 2 5p 3 [Ar] 3d 10 4s 2 4p 5 [Ar] 4s 2 4p 3 Which of the following sets of elements is called 'Typical Elements'? Elements of the 3rd period Elements of the 2nd period Alkali metals Noble gases In the context of the periodic table, what is the 'Bridge Element' between Li and Be ? There are no bridge elements; this term usually refers to the 2nd period elements. Mg Al Na What is the value of Z for the element that would be placed immediately below Francium ( Z=87 ) in the periodic table? 119 118 120 117 The element Mendeleev called 'Eka-Boron' was later discovered and named as: Scandium Gallium Germanium Technetium Identify the set of elements that belong only to the metalloids (semimetals) group. Si, Ge, As, Sb Al, Ga, Sn, Pb N, P, O, S Li, Na, K, Rb According to the Long Form of the Periodic Table, the element with atomic number Z = 56 belongs to which block and group? s-block, Group 2 p-block, Group 14 d-block, Group 2 f-block, Group 3 Which of the following is an incorrect statement regarding the f -block elements? They are all placed in Group 4 of the periodic table. They are also known as inner-transition elements. The Lanthanoids belong to the 6th period. The Actinoids belong to the 7th period. The Modern Periodic Law states that the physical and chemical properties of the elements are periodic functions of their: Atomic numbers Atomic weights Isotopic masses Atomic volumes The first element of the Rare Earth series (Lanthanoids) is: Cerium ( Z=58 ) Lanthanum ( Z=57 ) Gadolinium ( Z=64 ) Lutetium ( Z=71 ) If the atomic number of an element is 33, it will be placed in the periodic table in the: 15th group 13th group 17th group 14th group In the Lothar Meyer's atomic volume curve, the elements occupying the peaks are: Alkali metals Alkaline earth metals Halogens Noble gases The element with Z = 116 belongs to which group and block? Group 16, p-block Group 14, p-block Group 16, d-block Group 18, p-block The group number of f -block elements in the periodic table is: 3 2 Variable 14 Which of the following pairs of species are isostructural as well as isoelectronic? ClO 3 - and CO 3 2- CO 3 2- and NO 3 - SO 3 and NO 3 - NH 3 and CO 3 2- The diagonal relationship between Be and Al is evident from the fact that both: Form amphoteric oxides Are noble metals Have the same number of valence electrons Belong to the same period Van der Waals radius is determined for which type of elements? Noble gases Alkali metals Halogens Transition metals In the Lothar Meyer's atomic volume curve, which group of elements occupies the ascending portions of the curve? Halogens Alkali metals Alkaline earth metals Transition elements The general electronic configuration of Actinoids is correctly represented as: [Rn] 5f 1-14 6d 0-1 7s 2 [Rn] 4f 1-14 5d 1 6s 2 [Xe] 5f 1-14 6d 1 7s 2 [Rn] 5f 0-14 6d 0-2 7s 2 According to Moseley's Law, the square root of the frequency ( √ν ) of the characteristic X-rays emitted from an element is proportional to its: Atomic number ( Z ) Atomic mass ( A ) Number of neutrons ( n ) Nuclear charge density Identify the period and group of the element with atomic number Z = 43 . Period 5, Group 7 Period 4, Group 7 Period 5, Group 8 Period 6, Group 7 Which property of transition metals allows them to form a large variety of oxidation states? Very small energy difference between (n-1)d and ns orbitals Large atomic size of transition elements Presence of paired electrons in d -orbitals High electronegativity of d -block elements Mendeleev's periodic table was instrumental in correcting the atomic weight of which element based on its position and valency? Beryllium ( Be ) Indium ( In ) Gold ( Au ) Platinum ( Pt ) The element with atomic number Z = 120 (not yet discovered) would be placed in which group and period of the IUPAC periodic table? Group 2, Period 8 Group 1, Period 8 Group 2, Period 7 Group 8, Period 8 How many groups and periods were present in Mendeleev's original periodic table? 8 Groups, 12 Series 18 Groups, 7 Periods 9 Groups, 7 Periods 7 Groups, 10 Series The element Lanthanum ( Z = 57 ) belongs to which block of the periodic table? d-block f-block s-block p-block The elements of which period are called 'Typical Elements' because they represent the properties of their respective groups? 3rd period 2rd period 4th period 5th period Which of the following properties is characteristic of both Lithium and Magnesium due to their diagonal relationship? Both form nitrides by direct reaction with Nitrogen. Both form solid hydrogencarbonates easily. Both form superoxides when burnt in excess air. Both have very high solubility of their carbonates in water. Which element was named as 'Eka-Manganese' by Mendeleev before its discovery? Technetium Rhenium Scandium Germanium According to the IUPAC system, the temporary name for the undiscovered element with atomic number Z = 120 is: Unbinilium Ununnilium Unbiunium Binilium The element with the atomic number 119, if discovered, would be placed in which group of the periodic table? Group 1 Group 2 Group 18 Group 7 The first element of the 5f series (Actinoids) is: Thorium Actinium Protactinium Uranium Identify the element that does not belong to the d-block but is a transition element by historical definition? None of these Zinc Cadmium Mercury The only radioactive element among the Lanthanoids is: Promethium ( Pm ) Samarium ( Sm ) Europium ( Eu ) Gadolinium ( Gd ) The ground state electronic configuration of Lanthanum ( Z = 57 ) is: [Xe] 5d 1 6s 2 [Xe] 4f 1 6s 2 [Xe] 4f 14 5d 1 6s 2 [Xe] 6s 2 Identify the element with IUPAC symbol 'Unl'. Unniltrium Unnilunium Unnilbium Unnilquadium Why are Zn, Cd, and Hg often not considered 'true' transition elements? They have completely filled d -orbitals in their ground state and common oxidation states They are all liquids or low melting solids They do not form any complex compounds Their atomic radii are too large In Lothar Meyer's atomic volume curve, the halogens occupy which of the following positions? Ascending portions Descending portions Peaks Troughs The element with atomic number Z = 103 is Lawrencium. Which of the following is its correct position in the modern periodic table? Group 3, Period 7 Group 13, Period 7 Group 3, Period 6 Group 17, Period 7 Which property of Boron ( B ) and Silicon ( Si ) illustrates their diagonal relationship? Both form volatile and flammable gaseous hydrides Both are highly malleable metals Both form only basic oxides Both have the same first ionization enthalpy What is the reason for the similarity in the ionic radii of Hf 4+ ( 0.81 ) and Zr 4+ ( 0.80 )? Lanthanoid contraction Diagonal relationship Inert pair effect Shielding effect