1.

A period’s number on the periodic table corresponds to the number of:

Answer»

The row, or period, number that an element resides in on the table is EQUAL to the number of total shells that CONTAIN electrons in the ATOM. H and He in the FIRST period normally have electrons in only the first shell; Li, Be, B, and other period-two elements have two shells occupied, and so on.Explanation:hope it helps YOUPLEASE mark me as brainliest



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