Question

What are period in the periodic table ​

Answer 1

$\Large{\textsf{\pink{\underline{ANSWER}}}}$

★ A period in the periodic table is a row of chemical elements.

★ All elements in a row have the same number of electron shells.

★ Each next element in a period has one more proton and is less metallic than its predecessor.

Answer 2

Answer:

A period in the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells.