Question

state flund rule.write ekectronic configuration of Fe

Answer 1

atomic no. of Fe is 26

electronic configuration → 1s²,2s²,2p6,3s²,3p6,3d6,4s²

Answer 2

Answer : The electronic configuration of iron (Fe) will be, $1s^22s^22p^63s^23p^64s^23d^6$

Explanation :

Hund's rule : According to the hund's rule, the electrons are singly filled first in each orbital having same spin, then only pairing occurs.

The atomic number of iron (Fe) = 26. That means iron has 26 number of electrons.

The electronic configuration of Fe is, $1s^22s^22p^63s^23p^64s^23d^6$