Question

1. a chlorine atom has a mass number of 37 and an atomic number of 17, how many neutrons does it have? clear all 17 37 54 20

Explanation:

Step1: Recall the relationship between mass number, atomic number and neutrons

The mass number ($A$) of an atom is the sum of the number of protons and neutrons, and the atomic number ($Z$) is equal to the number of protons. The formula to find the number of neutrons ($N$) is $N=A - Z$.

Step2: Identify the values of $A$ and $Z$

Given that the mass number $A = 37$ and the atomic number $Z=17$.

Step3: Calculate the number of neutrons

Substitute the values into the formula: $N=37 - 17=20$.

Answer:

20