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