Question

for an element with 44 protons, 56 neutrons, and 40 electrons what is the mass number
53
100
78
13
54
11
25
40
56
10
131
44
12
22

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: Identify values of $p$ and $n$

Given that the number of protons $p = 44$ and the number of neutrons $n=56$.

Step3: Calculate mass number

$A=44 + 56=100$.

Answer:

100