Question

hy do elements in a vertical column of the periodic table have similar chemical properties?

A.<---------?
They possess the same number of outermost electrons.

B.
They have similar physical characteristics.

C.
They are found in similar locations in nature.

D.
They have similar atomic masses.

Answer 1

my guess is A

Answer 2

Correct. But is it a guess or do you have the reason for saying that?

Answer 3

i did some research but i wasnt sure about my answer

Answer 4

Okay! Good Luck.