Monatomic is one atom.
Diatomic is two atoms.
d. diatomic
I don’t know the author or what book/literary work this is, but could be how proteins are produced.
An ion is a charged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom. An example is Iron (III) , Iron (II) , lithium, and hydrogen.
The answer would be "Gas".
