halogen

As nouns the difference between halogen and halid

is that halogen is halogen (any element of group 7) while halid is halide.

As nouns the difference between halogen and alkyl

is that halogen is any element of group 7, i.e. fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal while alkyl is any of a series of univalent radicals of the general formula C_nH_2n+1 derived from aliphatic hydrocarbons.

is likely misspelled.

has no English definition.

As a noun halogen

is any element of group 7, i.e. fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal.

As a noun halogen is

halogen (any element of group 7).

As nouns the difference between mercury and halogen

is that mercury is a metal while halogen is any element of group 7, i.e. fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal.

As a proper noun Mercury

is the Roman god associated with speed, sometimes used as a messenger. He wore winged sandals. Mercury corresponded to the Greek god Hermes.

As a noun halogen is

halogen (any element of group 7).

As nouns the difference between halogen and salogen

is that halogen is any element of group 7, i.e. fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal while salogen is a halogen.