Which of the following is not a transition element?
Among the given options:
(A) Sc (Scandium) is a transition element.
(B) Pt (Platinum) is a transition element.
(C) Ag (Silver) is a transition element.
(D) Zn (Zinc) is not a transition element.
Zinc is classified as a post-transition metal because it does not have partially filled d orbitals in its ground state. Instead, its outermost electron configuration is [Ar] 3d10 4s2, with a completely filled 3d orbital.
Therefore, the correct answer is (D) Zn.
The matter is made up of very tiny particles and these particles are so small that we cannot see them with naked eyes.
The three states of matter are as follows: