The number of unpaired electrons in O2 i...

The number of unpaired electrons in `O_2` is â€¦â€¦

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The correct Answer is:

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

increase in number of unpaired electrons

some contribution of the orbital motion of the electron to the magnetic moment

Change in orbital spin of the electron

d-d transition.

an oxidising agent

a reducing agent

both an oxidising and a reducing agent

neither oxidising nor reducing agent

water

sulphuric acid

hydrochloric acid

fused sodium peroxide