(a) Which form of sulphur shows paramagnetic behaviour and why?
(b) Fluorine exhibits only -1 oxidation state whereas other halogens exhibit +1,+3,+5 or +7 oxidation states also. Explain as to why.
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(a) In vapour state sulphur partly exists as molecule which has two unpaired electrons in the antibonding orbitals like and hence exhibits paramagnetism.
(b) It is because fluorine is the most electronegative element and it does not have d-orbitals.