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STD 12 - 4. d and f- block elements — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 4. d and f- block elements4 Marks
MCQ
Which is most reactive metal
  • ✓
    $Fe$
  • B
    $Pt$
  • C
    $Ni$
  • D
    $Co$
✓

Answer

Correct option: A.
$Fe$
a
(a)$Fe$ because it easily gets oxidised in moist air.

$Fe\,\xrightarrow[{H_2}O/{H^ + }]{air} \mathop {}\limits_{} \,  \mathop {F{e_2}{O_3}.x\,{H_2}O}\limits_{{\rm{Rust}}} $

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