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Which element is an alkali metal with fewer than 10 protons in its nucleus ​

Which element is an alkali metal with fewer than 10 protons in its nucleus ​
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Which element is an alkali metal with fewer than 10 protons in its nucleus


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User Joel Derfner
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Lithium. It is in group 1 so it is an alkali metal. It only has 3 electrons in its nucleus because its atomic number is 3.
User Iaacp
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