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An atom has 14 protons and 15 neutrons, what is its mass number? I'm desperate 20 pts.

An atom has 14 protons and 15 neutrons, what is its mass number? I'm desperate 20 pts.
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5 votes
An atom has 14 protons and 15 neutrons, what is its mass number?

I'm desperate 20 pts.

User Pptaszni
by
8.7k points

2 Answers

2 votes
Mass number = protons + neutrons

14+15 = 29
User Malibeg
by
7.9k points
3 votes
The amount of protons is the same as the atomic number. You look for 14, silicon, and look at the mass, 28.086
User Rijo Simon
by
8.3k points
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