Question

In the first row transition metals, the element that exhibits only $+3$ oxidation state is

• A. zinc
• B. scandium
• C. nickel
• D. titanium
• E. iron

Answer 1

Answer: (B)

Scandium exhibits only $+3$ oxidation state as it can form $S{c}^{3+}$ ion to achieve a noble gas configuration $\left([Ne]3s^{2}3p^6\right)$.