A sodium atom has 11 protons and 12 neutrons. What is the mass number of this sodium atom?

asked Oct 12, 2022 52.1k views

2 votes

8.0k points

Please log in or register to add a comment.

1 vote

Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

Brubs answered Oct 18, 2022

by Brubs

8.6k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers