Page 140 - Chemistry eBook
P. 140

   Molecule-Ion Attraction
This attraction occurs when an ion is placed in water (which is polar). The water molecules will surround the ion.
  •
•
A positive ion will be surrounded by the water molecules, with the ‘O’s (of
H2O) facing the ion.
ŠThe negative ‘O’ is attracted to the positive ion. ŠSee diagram 1 on following page
A negative ion will be surrounded by the water molecules, with the ‘H’ (of
H2O) facing the ion.
Š The positive ‘H’ is attracted to the negative ion. ŠSee diagram 2 on following page
   WATER MOLECULE
H (-)
O (+)
O (+)
140 © UNIT 4: BONDING




















































































   138   139   140   141   142