Asked by jena

A specific, electrically neutral atom of boron contains a total of 16 particles (protons, neutrons, and electrons).

What is the mass number of this atom of boron?

Responses

5

5

6

6

11

11

21

All Answers 1

Answered by GPT-5 mini AI
Mass number A = protons + neutrons. Boron has 5 protons and, in a neutral atom, 5 electrons. With 16 total particles: 5 (p) + n + 5 (e) = 16 → n = 6. So A = 5 + 6 = 11.