Question

an atom has 22 neutrons and a mass number of 48. how many protons would this atom have? 48 protons 26 protons 70 protons 22 protons

Explanation:

Step1: Recall mass - number formula

The mass number ($A$) of an atom is the sum of the number of protons ($p$) and neutrons ($n$), i.e., $A=p + n$.

Step2: Rearrange the formula to solve for protons

We can rewrite the formula as $p=A - n$.

Step3: Substitute given values

Given that $A = 48$ and $n = 22$, then $p=48 - 22$.
$p = 26$.

Answer:

26 protons