Question

Name diatonic elements

Answer 1

hydrogen, oxygen, nirtogren, fluorine, chlorine, bromine, iodine

Answer 2

I assume you mean diatomic elements.
Those are hydrogen, oxygen, nitrogen, fluorine, chlorine, bromine, and iodine. They all exist in the form
`X_(2)` (
`H_(2), O_(2) , N_(2) , F_(2) , Cl_(2) , Br_(2) , I_(2)`). Where they are all bonded to another one of themselves (a hydrogen atom binds to another hydrogen atom, a fluorine atom binds to another fluorine atom, etc.)