They have same chemical properties
for example the elements of group VIII are called noble gases .They are unreactive, odorless and colorless.
Ain't is the correct answer
It can be a compound or a single element. An element is a pure substance that cannot be separated into simpler substances by chemical or physical means. There are about 117 elements, butcarbon, hydrogen, nitrogen and oxygen are only a few that make up the largest portion of Earth.
I would say d.
There are 0.501 moles in 60.66g of CF2Cl2
