1.2.2 Atom Size Flashcards by Mya Liu | Brainscape

Q

How to calculate relative mass.

A

number of protons + number of neutrons

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Q

How big are atoms?

A

Radius is approx 0.1 nanometre. (1x10^9)
Nucleus x1000 smaller tham atom itself.

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Q

23
Na
11
Top number is …
Bottom number is …

A

mass number
atomic number

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