Question

The mass number of an atom is 122 amu and the atomic number is 51. How many neutrons are in an atom?

Answer 1

Answer: 71 neutrons

Step-by-step explanation:

Mass #- atomic # = # neutrons

122-51 = 71 neutrons

Answer 2

Answer:The number of nutrons will be 122-51=71.

Step-by-step explanation:

As we know, the atomic mass of an atom is the sum of total number of protons and neutrons. And hence, we can find number of nutrons by the help of this relation.