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What is the period number of hydrogen

What is the period number of hydrogen
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What is the period number of hydrogen

User Katheryn
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Hydrogen's period number is 1. It is the first element on the periodic table it has 1 valence electron, it's chemical symbol is H and is group number is 1.
User Blake Niemyjski
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Period number is 1. It's group number also is 1. Hydrogen is a non-metal, yet happens to be on the metal side since it has that many valence electrons.
User Tmoschou
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