question_answer

 The electronic configuration of four elements L, P, Q and R are given in brackets \[L\,\left( 1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{4}} \right);\,\,Q\,\left( 1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{6}},\,\,3{{s}^{2}}\,\,3{{p}^{5}} \right)\] \[P\,\left( 1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{6}},\,\,3{{s}^{1}} \right);\,\,R\,\left( 1{{s}^{2}},\,\,2{{s}^{2}}\,2{{p}^{6}},\,\,3{{s}^{2}} \right)\] The formulae of ionic compounds that can be formed between these elements are        [NCERT 1983]

A)                 \[{{L}_{2}}P,\,\,RL,\,\,PQ\] and \[{{R}_{2}}Q\]   

B)                 \[LP,\,\,RL,\,\,PQ\] and \[RQ\]

C)                 \[{{P}_{2}}L,\,\,RL,\,\,PQ\] and \[R{{Q}_{2}}\]   

D)                 \[LP,\,\,{{R}_{2}}L,\,\,{{P}_{2}}Q\] and \[RQ\]