Question

An atom of alluminum has an atomic number of 13 and a mass of a mass number lf 27. How many neutrons does it have?

Answer 1

Answer:

13 Neutrons

Explanation:

Answer 2

Answer:

14 neutrons!

Explanation:

The mass number is the total number of protons and neutrons in a nucleus. The atomic number is the number of protons in the nucleus.

So... 27−13=14 neutrons