Question

Give 3 examples for eletrophilic substitution reaction?
Transition elements exhibit variable oxidation state why?
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Answer 1

Give 3 examples for eletrophilic substitution reaction?

answer

Electrophilic substitution of benzene is the one where an electrophile substitutes the hydrogen atom of benzene. ... Basic examples of electrophilic substitution reaction of benzene are nitration, sulfonation, halogenation, Friedel Craft's alkylation and acylation, etc.

Transition elements exhibit variable oxidation state why?

answer

These elements show variable oxidation state because their valence electrons in two different sets of orbitals, that is (n-1)d and ns. The energy difference between these orbitals is very less, so both the energy levels can be used for bond formation. Thus, transition elements have variable oxidation states.

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