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  • ​Symbol: H
  • Group: I
  • Period: I
  • Relative Atomic Mass: 1
  • Atomic Number: 1
  • ​Status: Non-Metal

Hydrogen

1



1

O

H

The Group (column) Number =

the number of electrons on the outer shell of the atom

​

The Period (row) Number =

the number of shells on the atom

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