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Chemistry Question on d -and f -Block Elements

When acidified K2Cr2O7K_2Cr_2O_7 solution is added to Sn2+Sn^{2+} salts, then Sn2+Sn^{2+} changes to

A

SnSn

B

Sn3+Sn^{3+}

C

Sn4+Sn^{4+}

D

Sn+Sn^{+}

Answer

Sn4+Sn^{4+}

Explanation

Solution

Cr2O72−+14H++3Sn2+−>2Cr3++3Sn4++7H2O {Cr2O^{2-}_7 + 14H+ + 3Sn^{2+} -> 2Cr^{3+} +3Sn^{4+} +7H2O}