asked 126k views
5 votes
Period # for hydrogen

asked
User Booth
by
8.4k points

2 Answers

4 votes

pretty positive the answer is 1


answered
User Naeem Ul Wahhab
by
8.3k points
7 votes

The period number for hydrogen is 1 for it is located on the horizontally, the first line (with the other being helium).

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