Free NEET Chemistry multiple-choice questions on Ionic Bonding. Attempt each question and reveal the answer with a full explanation.
According to Fajans' rules, which of the following halides possesses the highest covalent character? LiI LiF LiCl LiBr The correct sequence of increasing covalent character is represented by - BeCl2 < NaCl < LiCl NaCl < LiCl < BeCl2 BeCl2 < LiCl < NaCl LiCl < NaCl < BeCl2 In the case of alkali metals, the covalent character decreases in the order : MI > MBr > MCl > MF MCl > MI > MBr > MF MF > MCl > MBr > MI MF > MCl > MI > MBr The number of carbon atoms per unit cell of diamond unit cell is 4 8 6 1 Among CaH2 , BeH2 , BaH2 , the order of ionic character is BeH2 < BaH2 < CaH2 CaH2 < BeH2 < BaH2 BeH2 < CaH2 < BaH2 BaH2 < BeH2 < CaH2 Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s 2 2s 2 2p 3 , the simplest formula for this compound is Mg2X MgX2 Mg2X3 Mg3X2 Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is : Strontium chloride Magnesium chloride Beryllium chloride Calcium chloride Which of the following compounds has the highest degree of covalent character according to Fajan's rules? LiI LiF LiCl LiBr In the solid state, PCl 5 exists as an ionic solid consisting of which of the following species? [PCl 4] + and [PCl 6] - [PCl 3] + and [PCl 7] - [PCl 5] + and Cl - PCl 5 molecules only The correct order of the O-O bond length in O 2, H 2O 2 and O 3 is: H 2O 2 > O 3 > O 2 O 2 > O 3 > H 2O 2 O 3 > H 2O 2 > O 2 O 2 > H 2O 2 > O 3 The correct order of increasing thermal stability of the carbonates is: BeCO 3 < MgCO 3 < CaCO 3 < BaCO 3 BaCO 3 < CaCO 3 < MgCO 3 < BeCO 3 MgCO 3 < BeCO 3 < CaCO 3 < BaCO 3 CaCO 3 < MgCO 3 < BeCO 3 < BaCO 3 Which of the following ions is the most polarizable? I - F - Cl - Br - In the Born-Haber cycle for the formation of NaCl , which of the following steps is exothermic? Electron gain enthalpy of Chlorine Sublimation of Sodium Ionization of Sodium Dissociation of Chlorine In which of the following compounds is the metallic bond expected to be the strongest? Al Mg Na K Arrange the following ionic compounds in increasing order of their lattice energy: LiF, NaCl, KBr, MgO . KBr < NaCl < LiF < MgO MgO < LiF < NaCl < KBr LiF < NaCl < KBr < MgO NaCl < KBr < LiF < MgO Which of the following compounds is expected to have the highest lattice energy? Al 2O 3 MgO NaCl NaF Which of the following sequences correctly represents the increasing order of melting points of the alkali metal halides? LiF > NaCl > KBr > CsI CsI > KBr > NaCl > LiF NaCl > LiF > KBr > CsI LiF > KBr > NaCl > CsI Which of the following ionic compounds has the highest lattice energy? MgO NaF NaCl LiF When Lithium nitrate ( LiNO 3 ) is heated, the products formed are: Li 2O + NO 2 + O 2 LiNO 2 + O 2 Li + NO 2 + O 2 Li 3N + O 2 According to Fajan's rules, which of the following compounds is the most covalent? CuCl NaCl KCl RbCl The low solubility of BaSO 4 in water is primarily due to its: High lattice energy compared to hydration energy Low lattice energy High hydration energy Covalent character Silver iodide ( AgI ) is yellow in color, whereas Silver chloride ( AgCl ) is white. This is explained by: High polarization of I - by Ag + High lattice energy of AgCl Lower electronegativity of Chlorine Hydrogen bonding in AgI Which of the following has the highest lattice energy? MgO NaF NaCl KBr Which of the following compounds has the highest lattice energy? MgO NaCl KCl BaO Which of the following factors is primarily responsible for the high solubility of MgSO 4 in water compared to BaSO 4 ? Higher hydration enthalpy of Mg 2+ compared to its lattice enthalpy Lower lattice enthalpy of MgSO 4 compared to BaSO 4 Higher electronegativity of Magnesium Greater covalent character in BaSO 4 Which of the following compounds has the highest melting point due to high lattice energy? MgO NaF NaCl BaO In solid state, N 2O 5 exists as: [NO 2] +[NO 3] - [NO] +[NO 3] - [N 2O 4] + Molecular N 2O 5 Which of the following compounds has the lowest melting point? LiCl NaCl KCl CsCl The correct order of increasing lattice energy for the given ionic compounds is: NaCl < CaCl 2 < MgO MgO < CaCl 2 < NaCl CaCl 2 < NaCl < MgO NaCl < MgO < CaCl 2 If a is the length of the side of a cube, the distance between the body centered atom and one corner atom in the cube will be : 2 3 a 4 3 a 3 4 a 3 2 a A compound formed by Mg, Al and O, is found to have cubic close array of oxide ions in which Mg 2+ occupying 1 8 th of tetrahedral voids and Al 3+ ions occupying 1 2 the octahedral voids. The formula for the compound is MgAlO MgAl4O2 Mg2Al3O2 MgAl2O4 According to Fajan's rules, which of the following cations has the highest polarizing power? Cu + Na + K + Li + Which of the following compounds contains the most polarizable anion? LiI LiF LiCl LiBr Which of the following has the highest melting point? NaF NaCl NaBr NaI Based on electronegativity differences, which of the following compounds is expected to have the highest percentage of ionic character? CsF LiF NaCl KI Which of the following is the correct order of lattice energy for Alkali metal fluorides? LiF > NaF > KF > RbF RbF > KF > NaF > LiF LiF > KF > NaF > RbF NaF > LiF > KF > RbF According to Fajan's rules, which of the following is the correct order of covalent character for SnCl 2 and SnCl 4 ? SnCl 4 > SnCl 2 SnCl 2 > SnCl 4 SnCl 2 = SnCl 4 Both are purely ionic Which of the following alkali metal ions has the highest polarizing power? Li + Na + K + Cs +