the mass number of a chromium atom is 52 and it has 24 protons. how many neutrons does this atom…
the mass number of a chromium atom is 52 and it has 24 protons. how many neutrons does this atom have?\n24\n28\n76\n80
Answer
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 find neutrons
We can rewrite the formula as $n=A - p$.
Step3: Substitute given values
Given $A = 52$ and $p = 24$, then $n=52-24$. $n = 28$
Answer:
B. 28