# In the compound PCl_3, how many total valence electrons are present?

Dec 27, 2015

$26$

#### Explanation:

Valence electrons on each $P$ atom: $5$
Valence electrons on each $C l$ atom: $7$

Number of $P$ atoms: $1$
Number of $C l$ atoms: $3$

Number of valence electrons per molecule of $P C {l}_{3}$ = $5 + 3 \left(7\right)$ = $26$