MCQ
Given below are two statements :
Statement $I :$ The higher oxidation states are more stable down the group among transition elements unlike $p-$block elements.
Statement $II :$ Copper can not liberate hydrogen from weak acids.In the light of the above statements, choose the correct answer from the options given below :
  • A
    Both Statement I and Statement II are false
  • B
    Statement I is false but Statement II is true
  • C
    Both Statement I and Statement II are true
  • D
    Statement I is true but Statement II is false

Answer

On moving down the group in transition elements, stability of higher oxidation state increases, due to increase in effective nuclear charge.
$\Rightarrow E_{Cu^{+2} / Cu}^{\circ}=0.34 V$
$\Rightarrow E_{H^{+} / H_2}^{\circ}=0$
$\text { SRP : } Cu^{2+}>H^{+}$
Cu can't liberate hydrogen gas from weak acid.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free