KCET2015Chemistryd and f Block Elements
The electronic configuration of ( G d²⁺ ) is (at. no. of ( G d ) is 64)
Options
- A( [X e] 4 f⁸ )
- B( [X e] 4 f ⁷ )
- C( [X e] 4 f⁷ 5 d¹ 6 s² )
- D( [X e] 4 f⁷ 5 d¹ )
Correct answer
D. ( [X e] 4 f⁷ 5 d¹ )
Step-by-step solution
The electronic configuration for Gd is [X e ]4 ( f⁷ 5 d¹ 6 s² ) and for ( G d²⁺ ) is [X e ] 4f ( 7⁷ 5 d¹ )