What do the horizontal lines represent in periodic table?

Question

Chemistry

Jaelynn Mcguire

6 September, 13:33

What do the horizontal lines represent in periodic table?

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Answers (2)

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Gregory Strickland · Answer 1

A horizontal row in the periodic table, which signifies the total number of electron shells in an element's atom. A vertical column in the periodic table, which signifies the number of valence shell electrons in an element's atom.

Tito · Answer 2

The horizontal rows in the periodic table are periods while vertical lines are called groups