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

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Properties common to the elements manganese, iron, cobalt, nickel and copper include the ready formation by them all of

$(I)$ coloured ions in aqueous solution

$(II)$ oxides of nitrogen are formed on reaction with concentrated $HNO_3$

$(III)$ chlorides of formula $MCl_2$ and $MCl_3$

  • A
    $I, II, III$
  • ✓
    $I, II$
  • C
    $II, III$
  • D
    $I$, only
✓

Answer

Correct option: B.
$I, II$
b

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$\begin{array}{*{20}{c}}
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