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
Mg2+ is isoelectronic with
Cu2+
Zn2+
Na+
Ca2+
C.
Na+
Isoelectronic species have same number of electron. Mg2+ and Na+ both have 10 electrons hence, they are isoelectronic species.
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