atomic structure definitions

Question 1

what is relative isotopic mass

Answer 1

relative isotopic mass: is the mass of an atom of an isotope of an element compared with 1/12th of the mass of a carbon 12 atom

Question 2

what is relative atomic mass

Answer 2

the mass of an atom of an element compared with 1/12th of the mass of an atom of carbon 12

Question 3

relative molecular mass

Answer 3

mass of a molecule compared with 1/12 th of the mass of a carbon atom

Question 4

Empirical formula definition

Answer 4

simplest ratio of atoms of each element in a compound