Tardigrade
Tardigrade - CET NEET JEE Exam App
Exams
Login
Signup
Tardigrade
Question
Chemistry
Which pair is not correct order of lattice energy?
Q. Which pair is not correct order of lattice energy?
2106
196
Chemical Bonding and Molecular Structure
Report Error
A
K
Cl
>
M
g
O
73%
B
A
lN
>
M
g
O
14%
C
C
a
O
>
B
a
O
7%
D
M
g
C
O
3
>
C
a
C
O
3
7%
Solution:
Larger the charge on cation and anion, larger the polarising power and thus larger the covalent nature and such compounds have larger lattice energy.
K
+
>
M
g
2
+
+
1
+
2
S
i
ze
c
ha
r
g
e
C
l
−
>
O
2
−
−
1
<
2
−
S
i
ze
c
ha
r
g
e
Thus,
M
g
O
is less ionic than
K
Cl
thus lattice energy of
M
g
O
is larger than that of
K
Cl
.
Thus, given order is incorrect.