The relative abundance of chemical elements are shown by atomic mass number. Which is/are the metal(s)
A)helium
B)carbon, nitrogen, oxygen
C)hydrogen, helium
D)carbon, nitrogen, oxygen, iron

Question

The relative abundance of chemical elements are shown by atomic mass number. Which is/are the metal(s) 
A)helium 
B)carbon, nitrogen, oxygen 
C)hydrogen, helium 
D)carbon, nitrogen, oxygen, iron

Quizplus · Accepted Answer

Carbon, nitrogen, oxygen, and iron are all metals according to their location in the periodic table. Helium and hydrogen are nonmetals.

The Relative Abundance of Chemical Elements Are Shown by Atomic