Chemistry, asked by kdnaik24, 7 months ago

in the long form of periodic table horizontal rows? are called​

Answers

Answered by ItzSecretBoy01
2

Answer:

periods

In the Mendeleev periodic table, the vertical columns are called groups and the horizontal rows are called periods.

Answered by nija0710
1

Answer:

Horizontal rows are called periods and vertical columns are called groups

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