Question #06cac

1 Answer

Answer:

Periods and groups are the equivalent of saying rows and columns.

Explanation:

Periods are the horizontal rows of the Periodic Table that increase from left to right and are numbered 1-7

Here is a picture:

rpsec.usca.edu

Groups are the vertical columns of the Periodic Table that go from 1-18.

Here is a picture:

rpsec.usca.edu