Isotopes

Question 1

What is the definition of isotopes?

Answer 1

Different forms of the same element, which have the same number of protons, but a different number of neutrons.

Question 2

What is the definition of relative atomic mass (Ar)?

Answer 2

Relative atomic mass is an average mass eating into account the different masses and abundances (amounts) of all the isotopesthat make up an element.

Question 3

What is the formula for working out relative atomic mass.

Answer 3

Relative atomic mass= isotope abundance x isotope mass number/ sum of abundances of all the isotopes