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  2. Confused! kindly explain, The metal that gives hydrogen gas upon treatment with both acid as well as base is :
# Engineering

The metal that gives hydrogen gas upon treatment with both acid as well as base is :

  • Option 1)

    zinc

  • Option 2)

    iron

  • Option 3)

    mercury

  • Option 4)

    magnesium

 

Answers (1)
S solutionqc

 

 

Oxidation states -

Transition elements have a variety of oxidation states but the common oxidation state is +2 for 3d metals.

 

-

 

 

zinc is the metal that gives hydrogen gas on reacting with both acid & base

(i) Zn+HCL\rightarrow ZnCL_{2}+H_{2}

(ii) Zn+2NaOH+2H_{2}O\rightarrow Na_{2}Zn(OH)_{4}+H_{2}

\thereforeOption (I) is correct


Option 1)

zinc

Option 2)

iron

Option 3)

mercury

Option 4)

magnesium

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