CH1012
L1 /
#
L1 /
13
TRENDS IN ACIDITY
Boron hydroxide B(OH)3 is acidic.
Al & Ga hydroxides are amphoteric
thallium hydroxide TlOH is basic.
This reflects the
change from metalloid to
metal as we go down the Group.
acidic ฎ amphoteric ฎ basic
metal as we go down the Group.
acidic ฎ amphoteric ฎ basic
In a similar way for Group IIA:
beryllium hydroxide is amphoteric.
beryllium hydroxide is amphoteric.
All the other Group IA and Group IIA hydroxides are basic. This accompanies
a change from less metal ฎ metal.
a change from less metal ฎ metal.
In(OH)3 is insoluble
