are the following true for the element gallium? if they are false make them true.

Question

oxide more basic than Al203
oxide less basic than Mg(OH)2
hydroxide soluble in acid
hydroxide soluble in base
sulfide precipitates with H2S
sulfide not soluble in (NH4)2S
will form EaCl3, Ea2S3, and alum
EaCl3, Ea2S3, and alum soluble
will be discovered by spectrum

are the following true for the element scandium? if they are false make them true.
EbCl3 less volatile than AlCl3
will form Eb2O3
density of Eb2O3 = 3.5 g/cm3
ocide more basic than Al2O3
oxide less basic than Y2O3
oxide less basic than Mg(OH)2

Answer 1

answered later.