Chloride ion and potassium ion are isoelectronic. Then
potassium ion is relatively bigger
depends on the other cation and anion
their size are same
chloride ion is bigger than potassium ion
The electronic configuration of Cr3+ is
[Ar] 3d4 4s2
[Ar] 3d3 4s0
[Ar] 3d2 4s1
[Ar] 3d5 4s1
B.
[Ar] 3d3 4s0
Cr (24) = [Ar] 3d5 4s1
Cr3+ = [Ar] 3d3 4s0
An ionic compound is expected to have tetrahedral structure if r+/r- lies in the range of
0.414 to 0.732
0.225 to 0.414
0.155 to 0.225
0.732 to 1
The correct order of ionisation energy of C, N, O, F is
F < O < N < C
F < N < C < O
C < N < O < F
C < O < N < F
The oxide of an element whose electronic configuration is 1s2, 2s2, 2p6, 3s1 is
neutral
amphoteric
basic
acidic