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a
electrovalent and covalent
b
electrovalent, covalent, co-ordinate and hydrogen bond
c
covalent and co-ordinate covalent
d
electrovalent
answer is B.
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Detailed Solution
exists as Bond between cationic complex and sulphate ion is ionic (electrovalent)Four dative bonds are formed between Cu+2 ion and four water molecules .In water molecule covalent bonds are present between oxygen atom and Hydrogen atom.Hydrogen bonding between sulphate ion and water molecule.