2.1.1 Atomic structure and isotopes

Question 1

define isotope

Answer 1

isotopes are atoms of the same element with different numbers of neutrons.

Question 2

define Isoelectric

Answer 2

the same number of electrons.

Question 3

define relative atomic mass

Answer 3

Ar
the relative atomic mass of an element is the weighted mean mass of its atoms compared to 1/12th the mass of Carbon-12

Question 4

define relative isotopic mass

Answer 4

relative isotopic mass is the mass of an atom of an isotope compared to 1/12th mass of carbon-12

Question 5

Define relative formula mass

Answer 5

relative formula mass is the weighted mean mass of a formula unit compared to 1/12th the mass of Carbon-12

Question 6

define relative molecular mass

Answer 6

relative molecular mass is the weighted mean mass of a molecule of a compound compared with 1/12th the mass of an atom of carbon-12

It is the sum of the atomic masses of all the elements in the formula