Question

15. Write the basic radicals and acidic radicals of the
following and then write the chemical formulae of these
compounds.
(a) Barium sulphate
(b) Bismuth nitrate
(c) Calcium bromide
(d) Ferrous sulphide
(e) Chromium sulphate
(f) Calcium silicate
(g) Stannic oxide
(h) Sodium zincate
(i) Magnesium phosphate (j) Sodium thiosulphate​

Answer 1

a) Basic = (Ba)^(2+) , Acidic = (SO4)^(2-) , Formula = BaSO4

b) Basic = (Bi)^(3+) , Acidic = (NO3)^(-) , Formula = Bi(NO3)3

c) Basic = (Ca)^(2+) , Acidic = (Br)^(-) , Formula = CaBr2

d) Basic = (Fe)^(2+) , Acidic = (S)^(2-) , Formula = FeS

e) Basic = (Cr)^(3+) , Acidic = (SO4)^(2-) , Formula = Cr2(SO4)3

f) Basic = (Ca)^(2+) , Acidic = (SiO2)^(2-) , Formula = CaSiO2

g) Basic = (Sn)^(4+) , Acidic = (O)^(2-) , Formula = SnO2

h) Basic = (Na)^(+) , Acidic = (ZnO2)^(2-) , Formula = Na2ZnO2

i) Basic = (Mg)^(2+) , Acidic = (PO4)^(3-) , Formula = Mg3(PO4)2

j) Basic = (Na)^(+) , Acidic = (S2O3)^(2-) , Formula = Na2S2O3

Hope it is helpful...