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The number of unpaired electrons in O2 i...

The number of unpaired electrons in `O_2` is ……

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The correct Answer is:
2
`O_2 KK [sigma (2s)^2sigma**(2s)^2sigma_2^2pi_(2p_x)^2 pi_(2p_x)^2 pi_(2p_y)^2 pi_(2p_x)^(**" "1) pi_(2y)^(**" " 1)`
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Knowledge Check

  • There are three unpaired electrons in [Co(H_(2)O)_(6) ]^(2+) and calculated value of magnetic moment is 3 · 87 BM which is quite different from the experimental value of 4·40 BM. This is because of :

    A
    increase in number of unpaired electrons
    B
    some contribution of the orbital motion of the electron to the magnetic moment
    C
    Change in orbital spin of the electron
    D
    d-d transition.

  • Hydrogen peroxide is ……..

    A
    an oxidising agent
    B
    a reducing agent
    C
    both an oxidising and a reducing agent
    D
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    A
    water
    B
    sulphuric acid
    C
    hydrochloric acid
    D
    fused sodium peroxide