Which of the following will give a green hydrated ion?

  • A
    $Fe^{2+}$
  • B
    $Ni^{2+}$
  • C
    $(a)$ and $(b)$ both
  • D
    $V^{3+}$

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Similar Questions

Match the items in Column-$I$ with the items in Column-$II$.
Column-$I$ Column-$II$
$(1)$ General electronic configuration of $d$-block elements $(A)$ Transition elements
$(2)$ $d$-block elements $(B)$ $(n-1)d^{1-10}ns^{1-2}$
$(3)$ Groups $3$ to $12$ $(C)$ $Z = 58$ to $71$
$(4)$ Lanthanoid elements $(D)$ Last electron enters $d$-orbital

The number of statement$(s)$ correct from the following for copper (atomic number $29$) is/are $...$
$(A) \ Cu(II)$ complexes are always paramagnetic
$(B) \ Cu(I)$ complexes are generally colourless
$(C) \ Cu(I)$ is easily oxidized
$(D)$ In Fehling solution,the active reagent has $Cu(II)$

Match the following:
List-$I$List-$II$
$A$. Oxidation state of $V$ in $VOCl_2$$I$. $0$
$B$. Number of unpaired electrons in $MnO_4^{2-}$ ion$II$. $1$
$C$. Number of unpaired electrons in $[NiCl_4]^{2-}$ ion$III$. $5$
$D$. This oxidation state is exhibited by all lanthanide ions$IV$. $3$
$V$. $4$
$VI$. $2$

The correct answer is:

Select the correct option.

Identify the correct option:
$(I)\ AgCl$ is not soluble in $H_2O$ but soluble in $KCN$.
$(II)\ Zn$ when reacts with cold v.v. dil $HNO_3$ gives $NH_4NO_3$.
$(III)\ CuSO_4$ reacts with $KI$ to form $Cu_2I_2 + K_2SO_4$.
$(IV)\ CuSO_4 \cdot 5H_2O \xrightarrow{1000\,^oC}$ The gases liberated are $SO_2$ and $O_2$.

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