2.3 Isotopes

Question 1

Explain the chemical properties of isotopes of the same element

Answer 1

Same chemical properties-same electron config

Question 2

Explain physical properties of isotopes of the same element

Answer 2

Can be different eg. Density because they have different masses

Question 3

formula to calculate relative atomic mass

Answer 3

((Ar of isotope x abundance)+(Ar of isotope x abundance)) / 100 = relative atomic mass

Question 4

Why is the atomic mass of chlorine not a whole number

Answer 4

Because it has 2 isotopes, 75% of one mol of atoms is Cl-35
The other 25% is Cl-37. The abundance of each isotope is considered when working out the relative atomic mass