Atomic Structure Flashcards by Patrick McNealis | Brainscape

Q

Smallest unit of an element

A

Atom

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Q

The number of protons

A

Atomic number

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Q

A subatomic particle with a negative charge

A

Electron

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Q

A region around the nucleus, contains electrons

A

Electron cloud

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Q

A subatomic particle with no charge

A

Neutron

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Q

An atom’s central region, proton + neutron

A

Nucleus

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Q

Sum of numbers of protons + neutrons

A

Mass number

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Q

Subatomic particle that has a positive charge

A

Proton

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