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6. What are the mass numbers of; hydrogen, helium and boron? I 승​
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1 vote
6.
What are the mass numbers of; hydrogen, helium
and boron? I
승​

User Otto
by
7.5k points

1 Answer

3 votes
The mass number of hydrogen is 2

The mass number of helium is 4

The mass number of boron is 7

User PoorLuzer
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