Periodic Table Flashcards by cbVFudgdb dIFDPF

Q

what is the atomic number?

A

the number of protons an electrons

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Q

what is the atomic mass number?

A

number of protons and neutrons

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Q

the smaller number is the…

A

atomic number

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Q

how to find the number of neutrons?

A

atomic mass (rounded) - atomic number

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