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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
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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

User Webpreneur
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1 Answer

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