Question

12 numeric 1 point how many electrons (e⁻) are in the atom? answer 31 p3-

Explanation:

Step1: Identify the element

The symbol 'P' represents phosphorus. Phosphorus has an atomic number of 15. In a neutral atom, the number of electrons is equal to the atomic number.

Step2: Consider the charge

The ion is $P^{3 -}$, which means it has gained 3 electrons.

Step3: Calculate the number of electrons

The number of electrons in a neutral P atom is 15. After gaining 3 electrons, the number of electrons is $15 + 3=18$.

Answer:

18