Question

Match the following lettered items in the column on the left with an appropriate numbered items in the column on the right. All the numbered items should be used at least once, and some must be used more than once.

Answer 1

(A) Rb (an alkali metal) with atomic number Z $=$ 37 has lower $(IE{)}_1$ than Ca but greater than Cs.
(B) Fluorine, a halogen with atomic number Z $=$ 9 has more negative electron affinity than elements on either side of it in the same period.
(C) Sulphur (S) with outer electronic configuration $3s^{2}3p_x^{2}3p_y^{1}3p_z^1$ and atomic number Z $=$ 16 contains 2 unpaired electrons.
(D) Zinc with atomic number Z $=$ 30 and outer electronic configuration $3d^{10}4s^2$ is diamagnetic.
(E) Lead (Pb) with atomic number Z $=$ 82 and outer electronic configuration $6s^{2}6p^2$ contains 2 unpaired electrons.
(F) Mg with atomic number Z $=$ 12 and electronic configuration $\left[Ne\right]3s^2$ contains all paired electrons and is diamagnetic.