【 】Hydrogen has one proton and one electron. It is in column 1 on the periodic table. How many valence electrons does hydrogen have?

Hydrogen has one proton and one electron. It is in column 1 on the periodic table. How many valence electrons does hydrogen have?


Answer:

Hydrogen has one valence electron because in the valence shell of hydrogen there is one valence electron.

H(1) =1s¹

Valence shell means the outermost shell.Here is 1s.

We know that ,for main group element, group number is equal to the number of valence electron.Hydrogen's group number is 1A .So,hydrogen has one valence electron.


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