Isotopes And Relative Atomic Mass

Question 1

What are isotopes?

Answer 1

Are different forms of the same elements which have different number of protons

Question 2

What is relative atomic mass?

Answer 2

The relative atomic mass of an element is the average mass of one atom of the element compared to 1/12 of the mass of one atom of carbon-12

Question 3

How to work out the relative atomic mass of a element ?

Answer 3

Multiply each relative isotopic mass by its isotopic abundance and add up the results . Divide by the sum of the abundance