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Which is not arranged in the correct sequence?

  • Option 1)

    MO, M_{2}O_{3}, MO_{2}, M_{2}O_{5}   decreasing basic strength

  • Option 2)

    d^{5},d^{3},d^{1},d^{4} increasing magnetic moment

  • Option 3)

    Sc, V, Cr, Mn - Increasing number of oxidation states

  • Option 4)

    CO^{2+}, fe^{3+}, Cr^{3+},Sc^{3+} - Increasing stability

 

Answers (1)

best_answer

As learnt in

Magnetic Quantum Number (m) -

It  gives information about the spatial orientation of the orbital with respect to standard set of co-ordinate axis.

-

 

The magnetic moment is maximum when the maximum number of orbitals are occupied by single electrons.

Clearly, that is not the case in option 2 as d5 has maximum magnetic moment.

                                   d5


Option 1)

MO, M_{2}O_{3}, MO_{2}, M_{2}O_{5}   decreasing basic strength

This option is incorrect

Option 2)

d^{5},d^{3},d^{1},d^{4} increasing magnetic moment

This option is correct

Option 3)

Sc, V, Cr, Mn - Increasing number of oxidation states

This option is incorrect

Option 4)

CO^{2+}, fe^{3+}, Cr^{3+},Sc^{3+} - Increasing stability

This option is incorrect

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