Assertion: Zn, Cd and Hg are not regarded as transition elements. Reason: The electronic configurations of Zn, Cd and Hg are represented by the general formula (n - 1)d10ns2.

Question

Assertion: Zn, Cd and Hg are not regarded as transition elements. Reason: The electronic configurations of Zn, Cd and Hg are represented by the general formula (n - 1)d10ns2. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Transition metals are defined as the elements having incompletely filled d orbitals. Since Zn, Cd and Hg have completely filled d orbital, they are not regarded as transition elements.

Q. Assertion : Zn, Cd and Hg are not regarded as transition elements. Reason : The electronic configurations of Zn, Cd and Hg are represented by the general formula (n−1)d10ns2.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Transition metals are defined as the elements having incompletely filled d orbitals. Since Zn, Cd and Hg have completely filled d orbital, they are not regarded as transition elements.

Q. Assertion : $Z n$ , $C d$ and $H g$ are not regarded as transition elements.
Reason : The electronic configurations of $Z n$ , $C d$ and $H g$ are represented by the general formula $(n - 1) d^{10} n s^{2}$ .