Question

question 5 (1 point)
massnumber3. how many neutrons are in a $^{60}co$ atom?
60
87
54
33
27

Explanation:

Step1: Recall atomic number of Co

The atomic number of cobalt (Co) is 27.

Step2: Use neutron - mass number formula

The number of neutrons $n$ is given by $n = \text{Mass number}-\text{Atomic number}$. Here, the mass number is 60 and the atomic number is 27. So $n=60 - 27=33$.

Answer:

E. 33