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  • I have a doubt, kindly clarify. - d - and f - BLOCK ELEMENTS - JEE Main

The number of d- electrons retained in Fe^{2+}  (At.\; no.\; Fe=26)  ions is

  • Option 1)

    3

  • Option 2)

    4

  • Option 3)

    5

  • Option 4)

    6

 

Answers (1)

As we learnt in

Electronic Configuration -

The 'd' block elements follow the general configuration (n-1)d^{1-10}(ns^{1-2}).

-

 

Fe^{2+}\Rightarrow 1s^{2},\:2s^{2},\:2p^{6},\:3s^{2},\:3p^{6},\:3d^{6}


Option 1)

3

This option is incorrect.

Option 2)

4

This option is incorrect.

Option 3)

5

This option is incorrect.

Option 4)

6

This option is correct.

Posted by

Vakul

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