Which of the following pairs of species have unpaired electrons in antibonding Molecular Orbital

  • A

    $C_2,O_2$

  • B

    $O_2,He_2^+$

  • C

    $He_2^+,C_2$

  • D

    $N_2,O_2^-$

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Stability of the species $Li_2, Li_2^-$ and $Li_2^+$ increases in the order of :

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Thermal decomposition of $AgNO _3$ produces two paramagnetic gases. The total number of electrons present in the antibonding molecular orbitals of the gas that has the higher number of unpaired electrons is. . . . .

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According to $MO$ theory the bond orders for $O _2{ }^{2-}$, $CO$ and $NO ^{+}$respectively, are

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Which is set of paramagnetic molecules or ions

Match List$-I$ with List$-II.$

List$-I$ List$-II$
$(a)$ $Ne _{2}$ $(i)$ $1$
$(b)$ $N _{2}$ $(ii)$ $2$
$(c)$ $F _{2}$ $(iii)$ $0$
$(d)$ $O _{2}$ $(iv)$ $3$

Choose the correct answer from the options given below:

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