Question

question 10
how many protons and neutrons are in cl - 37?
37 protons, 17 neutrons
19 protons, 20 neutrons
17 protons, 37 neutrons
20 protons, 17 neutrons
17 protons, 20 neutrons

Explanation:

Step1: Determine the atomic number of chlorine

The atomic number of chlorine (\(Cl\)) is \(17\). The atomic number is equal to the number of protons. So, the number of protons in \(Cl - 37\) is \(17\).

Step2: Calculate the number of neutrons

The mass number of \(Cl - 37\) is \(37\). The formula to calculate the number of neutrons is \(n=\text{Mass number}-\text{Atomic number}\). Substituting the values, we get \(n = 37-17=20\).

Answer:

17 protons, 20 neutrons