Notifications
Clear all
Chemical Bonding and Molecular Structure
1
Posts
2
Users
2
Likes
315
Views
1
05/09/2021 12:15 pm
Topic starter
CaO and NaCl have the same crystal structure and approximately the same ionic radii. If U is the lattice energy of NaCl, the approximate lattice energy of CaO is
(a) U/2
(b) U
(c) 4C
(d) 2U
1 Answer
1
05/09/2021 12:18 pm
(c) 4C
Explanation:
Lattice energy = \(\frac{Product\;of\;charges}{interionic\;distance}\)
In NaCl the product of charges = 1 × 1;
In CaO product of charges = 2 × 2 = 4 while the interionic distance is almost same in both.
Thus lattice energy of CaO is almost four times the lattice energy of NaCl.
This post was modified 3 years ago 2 times by admin