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

I'm desperate 20 pts.

User Pptaszni
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2 Answers

2 votes
Mass number = protons + neutrons

14+15 = 29
User Malibeg
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6.9k 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
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