Question

Fe (valency2) &S
(valency2)

Answer 1

Why is valency of iron sometimes 2 or 3?

• Valence is defined by the as:

• The maximum number of univalent atoms (originally hydrogen or chlorine atoms) that may combine with an atom of the element under consideration, or with a fragment, or for which an atom of this element can be substituted.

Answer 2

❥Answer:-

Valency definition :it is the measure of combining power with other elements.

So, iron having atomic number 26. It has two electrons in its 4s orbital and 6 electrons in its 4d orbital.

In order to attain stability it looses it two electrons in the 4s orbital and hence have +2 valency and since the half filled orbitals are more stable it loses one more electron from d orbital and has +3 valency.

TYSM❤️