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An atom has 5 protons and 7 neutrons. What is its mass number?
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An atom has 5 protons and 7 neutrons. What is its mass number?
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Dec 28, 2015
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An atom has 5 protons and 7 neutrons. What is its mass number?
Chemistry
high-school
Dale Reidy
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Mass number = No. of protons + No. of neutrons
= 5 + 7
= 12 u.
Thus, the answer is 12 u.
Zaffer
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Dec 28, 2015
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Zaffer
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mass number = protons + neutrons
mass number = 5 + 7
mass number = 12
Krzysztof Szewczyk
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Jan 4, 2016
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Krzysztof Szewczyk
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