Question

Write electronic orbital configurations of fe fe²+, fe³+​

Answer 1

Solution :

(1) $\sf{}Fe ^{2+}$

Here, atomic number of Fe is 9 and it is loosing two electrons therefore, atomic number becomes (9-2) = 7

Electronic configuration: 1s² 2s² 2p³

(2) $\sf{}Fe ^{3+}$

Here, atomic number of Fe is 9 and it is loosing three electrons therefore, atomic number becomes (9-3) = 6

Electronic configuration: 1s² 2s² 2p²

More to know:

Rules :-

• Paule's Exclusion Principle

It states that no two electrons could have same set of Quantum numbers.

It also states that only two electrons can accommodate in same orbital.

• Aufbau's Principle

It states that in ground state of atom the filling of an electron in the orbital takes place in increasing order of their energy.

• Bohr Bury rule

The orbitals with the lesser value for (n+l) is filled before with greater value of (n+l ).