Question

Transition elements have vacant:

• A. $s-$orbitals
• B. $p-$orbitals
• C. $d$-orbitals
• D. $f-$orbitals

Answer 1

The correct option is C $d$-orbitals

The transition elements are those elements having a partially filled d subshell in any common oxidation state. The term "transition elements" most commonly refers to the d-block transition elements. The 2B elements zinc, cadmium and mercury do not strictly meet the defining properties but are usually included with the transition elements because of their similar properties.

Hence, the correct option is $\text{C}$