molecular ions?

Question

Are molecular ions only formed by bombardment of electrons.
what are the similarities between radicals and ions.

Answer 1

No molecular ions can be formed by usual chemistry without the help of electronic bombardment

a radical is a molecule or atom having one or several single electrons. Give you an easy example the atom H. This atom has only one electron which is of course single. The radicals are instable usually and combine to other species

An ion is an atomic or molecular species which has more or less electrons than protons. Usually to be stable the ion must have paired electrons and is NOT a radical. Example fluorine ion fluorine ion which is negative has 9 protons and 10 electrons.It is very stable

Answer 2

Frequent with Hydrogen, however don't be mistaken what others say any charged matter in a positive can discharge a "molecular ion" (after all Matter is Mass and to stay as simple as possible I will post a pdf document of what one of my engineering reference manuals says it is).. Molecular Ion: An ion formed by the removal from (positive ions) or addition to (negative ions) a molecule of one or more electrons without fragmentation of the molecular structure. The mass of this ion corresponds to the sum of the masses of the most abundant naturally occurring isotopes of the various atoms that make up the molecule, with a correction for the masses of the electrons lost or gain.