65th B.P.S.C. (Pre) 2019
Which of the following is not a type of element?
aMetals
bNon-metals
cGases✓ Correct
dMetalloids
eNone of the above/More than one of the above
Explanation
In the periodic table, elements are divided into three main groups—metals, nonmetals, and metalloids. Some gases such as hydrogen (H), helium, nitrogen (N), oxygen (O), fluorine (F), neon, chlorine, argon, krypton, xenon, and radon are classified as nonmetals, but most gases are compounds.
general-science