Question

1.
What is the mass number of an isotope of tin that has 66 neutrons and 50
protons?

Answer 1

The mass # would be 16

Answer 2

`\boxed {\tt 116}`

Step-by-step explanation:

To find the mass number of an isotope, add the number of neutrons and protons.

`mass \ number = neutrons + protons`

There are 66 neutrons and 50 protons in the this isotope of tin.

`mass \ number = 66+50`

Add 66 and 50.

`mass \ number = 116`

The mass number of this tin isotope is 116.