1.

Two elements X and Y have following electron configurations  X \[=1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}},\,\,4{{s}^{2}}\] and Y \[=1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}}\] The compound formed by combination of X and Y is [DPMT 2001]

A.                 \[X{{Y}_{5}}\]    
B.                 \[{{X}_{2}}{{Y}_{5}}\]
C.                 \[{{X}_{5}}{{Y}_{3}}\]     
D.                 \[X{{Y}_{2}}\]
Answer» E.


Discussion

No Comment Found

Related MCQs