Which of the following compounds is a molecule?
nacl

mgbr2

h2

alcl3 which of the following compounds is a molecule?
nacl

mgbr2

h2

alcl3

H2

Explanation:

Molecule: a name applied to any compound whose major bonding pattern is covalent.

H2 contains one element, hydrogen. When an atom bonds with another atom of the same element, it is called a diatomic molecule. Diatomic molecules are formed through covalent bonds.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

i'm wiling to try and you : )