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OpenStudy (anonymous):

I need Help. PLEASE!!

OpenStudy (anonymous):

The mass number of an element is the? number of protons plus electrons number of protons only number of protons plus neutrons

OpenStudy (anonymous):

only the number of protons. what is the number of protons + neutrons called?

OpenStudy (anonymous):

Nucleons

OpenStudy (anonymous):

protons and nucleons are together called as nucleons but their their total number is called the Atomic Mass Number

OpenStudy (anonymous):

Ok. Thank You!

OpenStudy (anonymous):

yw

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