1.

Acidified solution of sodium thiosulphate are unstable because in thiosulphate:

Answer»

The sulphur ATOMS are at UNSTABLE OXIDATION state of + 2
The two sulphur atoms are different oxidation states of +6 and -2
The S-S BOND are unstable bonds
Thio componds contain sulphur in zero oxidation state

Answer :B


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