The Doppler effect is exhibited in the electromagnetic radiation emitted from Moving Objects
Diatomic molecules are the molecules that you can find them in natural bonded to itself. example: O₂, N₂ or Br₂.
the answer is hydrogen ---> H₂
I have attached a little trick to remember these.
Chemical property on this
Both salt and sugar have radically different properties (both ... known as table salt, is an ionic compound with the chemical formula NaCl, ...