Write condensed orbital notation of electronic configuration of the following elements : i. Fluorine (Z = 9)  ii. Scandium (Z = 21) 

C) a→ii, b→i, c→iii

Correct option is  B) O2-

Correct option is  B) dew

Correct option is  B) fog

Correct option is D) 2, 8, 1

The general outer electronic configuration of s-block elements is ns1-2. The general electronic configuration for the p-block elements is ns2np1-6.

The general outer electronic configuration of the d-block elements is ns0-2 (n-1)d1-10 while the general outer electronic configuration of the f-block elements is ns2 (n-1)d0-1 (n-2)f1-14.

i. Observed outer electronic configuration of europium (Eu) is 6s2 4f7 5d0. ii. In the observed electronic configuration of Eu, 4f subshell is half-filled which is a highly stable configuration. Therefore, observed electronic configuration...

Group 1 elements Group 2 elements Alkali metals Alkaline earth metals Outer electronic configuration: ns1. Outer electronic configuration: ns2 Monovalent positive ions Divalent positive ions