Question

1. using the isotope from the image provided, what does the number 48 mean? a the total number of neutrons in the nucleus. b total number of protons and neutrons in the nucleus.

Explanation:

In isotope notation, the top number represents the mass number. The mass number is calculated as the sum of protons and neutrons in the nucleus.

Answer:

B. Total number of protons and neutrons in the nucleus.