Question

Answer with explanation....Don't give direct answer​

Answer 1

Answer:

The general electronic configuration of f-block elements is:: (n-2)f^1–14(n-1)d^0-1ns^2

1. As the name suggests they are in f block , so their configuration must have atleast 1 electron in f shell , hence it must be f^1-14
2. In order for an electron to be moved to f shell , their s shells must be filled , so s^2
3. If we look at the formulas of all f block elements , the maximum no. electrons in d shell would be 1 (except thorium which poses an anomaly ) So d^0-1

Answer 2

Answer:

A option is the correct answer.

Explanation:

As lanthanide are the members of f block so their general electronic configuration is same as that of f block elements.