Question

question 9
5 pts
what are the ideal mass numbers for carbon and boron
8 and 16
6 and 5
12 and 10
10 and 6

Explanation:

The mass number of an element is the sum of protons and neutrons in its nucleus. Carbon has 6 protons and 6 neutrons in its most common isotope, giving it a mass - number of 12. Boron has 5 protons and 5 neutrons in its most common isotope, resulting in a mass - number of 10.

Answer:

C. 12 and 10