what is the chemical formula for this molecule? complete the formula below: p h submit

what is the chemical formula for this molecule? complete the formula below: p h submit
Answer
Explanation:
Step1: Count phosphorus atoms
There is 1 phosphorus (P) atom.
Step2: Count hydrogen atoms
There are 3 hydrogen (H) atoms.
Answer:
$P_1H_3$ (usually written as $PH_3$)