If a neutral atom of boron (B) contains 5 protons, 5 electrons and 6 neutrons, what is the mass number of this atom? (2 points) 21 11 10 5

asked Mar 2, 2019 43.3k views

4 votes

If a neutral atom of boron (B) contains 5 protons, 5 electrons and 6 neutrons, what is the mass number of this atom? (2 points)

21
11
10
5

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3 votes

The atomic mass it 11. 5 Proton and 6 Neutrons is 11 mass. Protons and Neutrons both weigh 1U.

Conffusion answered Mar 4, 2019

7.8k points

2 votes

i believe the answer is 11, its been awhile since i was in science

GuyH answered Mar 7, 2019

by GuyH

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