Question

Which of the following is a compound. A. Cl2 B. H2O C. He D. H2

Answer 1

H2O is the compound because its a combination of two or more elements (the definition of a compound).

Cl2, He, and H2 are all one element

Answer 2

Which of the following is a compound?

B. H2O

H20 is a combinationn of two hydrogen atoms & one oxygen atom.

Hope I helped, sorry if not tho