Forum

In which of the fol...
 
Notifications
Clear all

In which of the following arrangements, the order is NOT according to the property indicated against it?

1 Posts
2 Users
0 Likes
309 Views
0
Topic starter

In which of the following arrangements, the order is NOT according to the property indicated against it?

(a) Li < Na < K < Rb :

Increasing metallic radius

(b) I < Br < F < Cl :

Increasing electron gain enthalpy (with negative sign)

(c) B < C < N < O

Increasing first ionization enthalpy

(d) Al3+ < Mg2+ < Na+ < F-

Increasing ionic size

1 Answer
0

(c) B < C < N < O

Increasing first ionization enthalpy

Explanation:

In a period the value of ionisation potential increases from left to right with breaks where the atoms have some what stable configuration. In this case N has half filled stable orbital. Hence has highest ionisation energy. Thus the correct order is

B < C < O < N not B < C < N < O

Share:

How Can We Help?