03-09-2020
Biology

contestada

Hydrogen (H), potassium (K), and sodium (Na) are all in the same

A:Group
B:Period

So they have the same number of

A:Electron shell
B:Valence

Respuesta :

jayicyse10792 jayicyse10792

03-09-2020

The first one is B:period and the second one is A:Electron shell

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