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vovangra [49]
3 years ago
11

How many neutrons does element X have if its atomic number is 25 and its mass number is 92?

Biology
2 answers:
inna [77]3 years ago
8 0
Atomic mass is the sum of neutrons and protons, and atomic number is the number of protons.
Therefore, 92-25 = 67.

67 neutrons.

Sidenote:
Electrons are not considered in atomic mass since they weigh way too little
Deffense [45]3 years ago
3 0
Atomic mass is the sum of neutrons and protons, and atomic number is the number of protons.
Therefore, 92-25 = 67.

67 neutrons.

Sidenote:
Electrons are not considered in atomic mass since they weigh way too little
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