An atom of beryllium has 4 protons, 4 electrons, and 5 neutrons. What is its mass number?

asked Jan 26, 2021 207k views

4 votes

7.1k points

Please log in or register to add a comment.

4 votes

Answer:

40 is correct

Step-by-step explanation:

Hanane answered Jan 28, 2021

7.2k points

5 votes

Your answer should be 4.

Hope this helped!

-candycchandler

Mrtnmgs answered Jan 29, 2021

7.7k points

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

8.3m questions

10.9m answers