Which of the following is not arranged in the correct sequence?

  • A
    $MO, M_2O_3, MO_2, M_2O_5$ - Decreasing basic nature
  • B
    $Sc, V, Cr, Mn$ - Increasing number of oxidation states
  • C
    $d^5, d^3, d^1, d^4$ - Increasing magnetic moment
  • D
    $Mn^{2+}, Fe^{2+}, Cr^{2+}, Co^{2+}$ - Decreasing stability

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Similar Questions

The transition metals have a less tendency to form ions due to

Statement $(I)$ $Co^{2+}$ has a higher magnetic moment than $Cr^{3+}$.
Statement $(II)$ Ionisation enthalpies of $Ce$,$Pr$ and $Nd$ are higher than $Th$,$Pa$ and $U$.
Which of the following is correct?

Select the correct option.

Which of the following will give a green hydrated ion?

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 $Cu(II)$

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