Answer:
Explanation:
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.
Formula unit mass of a substance is the sum of the atomic masses of all the atoms present in the formula of a respective compound
an uncharged molecule (typically highly reactive and short-lived) having an unpaired valency electron.
the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.
The mass number is defined as the total number of protons and neutrons in an atom. The number of neutrons = mass number − atomic number.
a unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon-12.