Elements and Isotopes

Question 1

What is an isotope?

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 relative atomic mass (Ar)?

Answer 2

Average mass taking into account the different masses and abundances of all the isotopes that make up the element

Question 3

What is the formula to figure out the relative atomic mass (Ar) of an atom?

Answer 3

sum of (isotope abundance x isotope mass) of all the isotopes ÷ (sum of abundance of all isotopes)