Question

The common valency shown by d block elements are​

Answer 1

Answer:

For the d-block and f-block elements, valency is determined not only on the basis of valence electrons but also on d and f orbital electrons. However, the general valencies of these d and f block elements are 2 and 3.

Explanation:

Answer 2

Answer:

Common valency shown are 2

Explanation:

• D Block elements show the common valency 2. There valency is not just depended on the basis of valence electrons  also on the d orbit electrons.
• D-block elements valency can be determined by the number of valence electron in the valence shell most oftenly equal to group number.
• As their is small difference in the energies of 4s and 3d orbitals of D-Block elements, they have variable valency.
• As a result it become easier to lose electrons from outer shell because of which they show variable oxidation state.