question_answer

The ground state electronic configuration of the elements, U, V, W, X, Y and Z are as follows:

U \[1{{s}^{2}}2{{s}^{2}}2{{p}^{3}}\] V \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{1}}\] W \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{2}}\] X \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{5}}4{{s}^{2}}\] Y \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{10}}4{{s}^{2}}4{{p}^{6}}\]

Determine which sequence of elements best fits the following statements

(i) element-forms a carbonate which is not decomposed by heating

(ii) element is most likely to form coloured ionic compounds

(iii) element is a monoatomic gas

A) (i)\[\to \]V, (ii)\[\to \]X, (iii)\[\to \]Y

B) (i)\[\to \]V, (ii)\[\to \]Y, (iii)\[\to \]U

C) (i)\[\to \]U, (ii)\[\to \]Y, (iii)\[\to \]X

D) (i)\[\to \]W, (ii)\[\to \]X, (iii)\[\to \]Y