____ and neutrons are found in the nucleus of an atom. Electrons each have a ____ charge. Protons and ____ each both have a mass of ____ atomic mass unit. The mass of an electron is very ____ or ____. ____ are found in shells orbiting the nucleus of an atom. The ____ is the centre of an atom.

Rangliste

Visuel stil

Indstillinger

Skift skabelon

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