2)A new ionic lattice (AB) adopts a non ideal NaCl structure, as found with most ionic lattices The AB compound was found to have a lattice energy of U 5 35x10 3 kJ mol, density of 5 2 g cm 3 , Hs 26 kJ mol, and the radii values shown below Ionic Radii (pm) 4 coord no 6 coord no 8 coord no A 2 138 144 152 B 2 180 188 194 For the unit cell of AB what is the length of one of its sides (i e the value of a units of pm)

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Question: 2)A new ionic lattice (AB) adopts a non-ideal NaCl structure, as found with most ionic lattices. The AB compound was found to have a lattice

2)A new ionic lattice (AB) adopts a non-ideal NaCl structure, as found with most ionic lattices. The AB compound was found to have a lattice energy of U=-5.35x10³ kJ/mol, density of 5.2 g/cm³, ΔHs = + 26 kJ/mol, and the radii values shown below.

Ionic Radii (pm)	4 coord. no.	6 coord. no.	8 coord. no.
A²⁺	138	144	152
B^2-	180	188	194

For the unit cell of AB what is the length of one of its sides (i.e. the value of "a"; units of pm)?

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