15 numeric point. what is the atoms charge (chg)? answer. p⁺ = 20, n⁰ = 21, e⁻ = 18

Explanation:

Step1: Recall charge - calculation formula

The charge of an atom is calculated as the number of protons minus the number of electrons, i.e., $Charge=p^{+}-e^{-}$.

Step2: Substitute given values

Given $p^{+} = 20$ and $e^{-}=18$. Then $Charge = 20 - 18$.

Step3: Calculate the charge

$20-18 = 2$.

Answer:

2