Question

Number of valence electrons present in atoms of $HCl{O}_4,HCl{O}_3,HCl{O}_2$ respectively are :

• A. $32,26,20$
• B. $26,20,14$
• C. $36,30,24$
• D. $28,22,16$

Answer 1

The correct option is A $32,26,20$

Number of valence electrons present in atoms of $HCl{O}_4,HCl{O}_3,HCl{O}_2$ are32,26,20 respectively.
Number of valence electrons present in atoms of $HCl{O}_4$ are $1+7+4\left(6\right)=32$
Number of valence electrons present in atoms of $HCl{O}_3$ are $1+7+3\left(6\right)=26$
Number of valence electrons present in atoms of $HCl{O}_2$ are $1+7+2\left(6\right)=20$