10. Periodic Properties of the Elements
Periodic Trend: Ionic Radius
9PRACTICE PROBLEM
The cation-anion distance in KBr is experimentally determined to be 330 pm. The atomic radius and ionic radius are given below:
Atomic radius (pm)
K 203
Br 120
Ionic radius (pm)
K+ 152
Br– 182
Which would be a more accurate estimation of the ionic cation-anion distances, the atomic radius or ionic radius?
The cation-anion distance in KBr is experimentally determined to be 330 pm. The atomic radius and ionic radius are given below:
Atomic radius (pm)
K 203
Br 120
Ionic radius (pm)
K+ 152
Br– 182
Which would be a more accurate estimation of the ionic cation-anion distances, the atomic radius or ionic radius?