Question

Give the Formula and valency of: a) aluminate b) chromate c) aluminium d)cupric

Answer 1

Aluminate is a compound made from one or more aluminium and oxygen atoms and is an anion compound. Chromate is a salt that contains anions of chromate as well as oxygen.

Aluminium is a silvery-white, soft and ductile metal in the boron group of the Periodic Table. Cupric is an inorganic compound “which is black in colour” and is s stable oxide of copper.

Formula of:

a) $Aluminate =\mathrm{AlO}_{3}$

b) $Chromate =\mathrm{CrO}_{4}^{-2}$

c) $Aluminium = Al$

d) $Cupric = Cu(II)$

Valency of:

a) Aluminate = -1

b) Chromate = 2

c) Aluminium = 3

d) Cupric = 2

Answer 2

Answer:

Aluminate is a compound made from one or more aluminium and oxygen atoms and is an anion compound. Chromate is a salt that contains anions of chromate as well as oxygen.

Aluminium is a silvery-white, soft and ductile metal in the boron group of the Periodic Table. Cupric is an inorganic compound “which is black in colour” and is s stable oxide of copper.

Formula of:

a) Aluminate = AlO3

b) Chromate =CrO4-2

c) Aluminum =Al

d) Cupric =Cu(II)

Valency of:

a) Aluminate = -1

b) Chromate = 2

c) Aluminum = 3

d) Cupric = 2