Question

Assertion (A) : Copper is a non-transition element.

Reason (R) : Copper has completely filled d-orbitals in its ground state.

Options

• Both (A) and (R) are true and (R) is the correct explanation of (A).

• Both (A) and (R) are true, but (R) is not the correct explanation of (A).

• (A) is true, but (R) is false.

• (A) is false, but (R) is true.

Answer 1

(A) is false, but (R) is true.

Explanation:

Copper is a transition metal due to the presence of incompletely filled d-orbital in its common oxidation state Cu⁺² (3d⁹) while in its ground state the electronic configuration of Copper is (3d¹⁰4s¹).