23 The names of some compounds and values of Lattice energy are given below. (No

Question

23 The names of some compounds and values of Lattice energy are given below. (Not in any order) Compounds: MgBr2, AlBrs, CaBr2, LiBr Lattice energy KJ/mol: 2176, 5361, 807, The Lattice energy of CaBrz is 2440 A. 2440 KJ/mol B. 2176 KJI/mol C. 5361 KJ/mol D. 807 KJ/mol 24 ?? ??? ?? The above structure represents an unsaturated fat. How many n bonds are there in this compound. Also predict the molecular geometry (MG) for Carbon 3 and oxygen 1 A. 3 ? bonds ; MG C (3) Linear ; MG 0(1) Bent B: 8 ? Bonds ; MG C (3) Tetrahedral ; MG 0(1) linear C: 4 ? Bonds ; MG C (3) Trigonal Planar ; MG 0(1) Tetrahedral D: 4 ? Bonds ; MGC (3) Trigonal Planar; MG 0(1) Bent Version 1

Explanation / Answer

23) B (2176 kJ/mol)

24) D (As Carbon 3 is sp2 hybridised hrnce trigonal planar, oxygen 1 is sp3 hybridised hence tetrahedral with two lone pairs, so bent geometry)

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