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Nookie1986 [14]
3 years ago
15

How many neutrons does element X have if its atomic number is 20 and its mass number is 82?

Chemistry
1 answer:
snow_tiger [21]3 years ago
6 0
Protons = Atomic number
Protons + Neutrons = Mass Number
Protons = 20
Neutrons = Atomic number - Mass number
Neutrons = 82 - 20 = 62 
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