Question

How many period in a periodic table??
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Answer 1

Explanation:

there are 7 periods in a periodic table

Answer 2

7 Periods

A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements.

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