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OpenStudy (anonymous):
An atom has an atomic number of 12 and a mass number of 25. How many neutrons does the atom have?
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OpenStudy (anonymous):
Can you tell me what do you understand by the terms "atomic number" and "mass number" ?
OpenStudy (anonymous):
The number of protons in an atom is called its atomic number that is all i know
OpenStudy (anonymous):
ok.. thats good :) Mass number means "the no. of protons plus the number of neutrons" .. now can you answer?
OpenStudy (anonymous):
soo 13?
OpenStudy (anonymous):
Bingo! ;-)!
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OpenStudy (anonymous):
thank you
OpenStudy (anonymous):
your welcome !
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