Question

The rows in the periodic table are called ___________ because scientists noticed that certain properties of elements repeat themselves periodically, or regularly.

A. rows
B. lines
C. groups
D. periods

Answer 1

@ChantySquirrel1129**

A, or D right?

Answer 2

XD

Answer 3

LOL XDD

BUT,

k, take a look at this:

http://www.chem4kids.com/files/elem_pertable.html

c:

Answer 4

Hmm ok. So it's D

Answer 5

Yes :333