question_answer 1)

  The electronic configurations of three elements A, and C are given below. Answer the questions 14 to 17 on the basis of these configurations. A    \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}\] B    \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{3}}\] C    \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{5}}\] Stable form of A may be represented by the formula : (a) \[A\]                                               (b)\[{{A}_{2}}\]                                 (c)\[{{A}_{3}}\]                                 (d)\[{{A}_{4}}\]

Answer:

  (a) A is an inert gas. It has no combining capacity.