Atomic Numbers And Mass Numbers Flashcards

1
Q

Define mass number

A

The mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom of that element

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2
Q

What is the nuclear formula of an element?

A

It is a method of summarising information about an element

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3
Q

What letter usually indicates mass number?

A

A

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4
Q

What letter usually indicates atomic number?

A

Z

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