use this information to write the element in isotope notation. 40 p+, 40 e-, 51 n0 40 zr 91.2 what is the…
use this information to write the element in isotope notation. 40 p+, 40 e-, 51 n0 40 zr 91.2 what is the mass number? ? zr 40
Answer
Answer:
91
Explanation:
Step1: Recall mass - number formula
The mass number ($A$) is the sum of the number of protons ($p$) and neutrons ($n$). Mathematically, $A=p + n$.
Step2: Identify values of $p$ and $n$
Given $p = 40$ and $n=51$.
Step3: Calculate mass number
$A=40 + 51=91$.