R2qBluenterd R2qBluenterd

06-04-2016
Chemistry

contestada

A period is a horizontal row on the periodic table.
a. True
b. False

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depigeorgiou depigeorgiou

06-04-2016

It is True because in the periodic table of elements, there are seven horizontal rows of elements called periods. The vertical columns of elements are called groups, or families.

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