Atomic Structure

Question 1

define the term ‘atomic radius’

Answer 1

this is half of the distance between two covalently bonded atoms

Question 2

define the term ‘ionic radius’

Answer 2

this is assigned by considering the distance between the 2 centres of adjacent ions in a crystal lattice

Question 3

define the term ‘relative atomic mass’

Answer 3

this is the average mass of an atom (taking into account all its isotopes and their abundances) compared to 1/12 the mass of one carbon-12 atom.