sir,

my name is CHINTAPATLA.NAVEEN KUMAR iam studying in ap IIIT nuzvid.

Q.Carbon shows tetra valency. It exists CH4 as well as CH3 by removing hydrogen. How is it possible?

Carbon shows tetravalency. C_H3+ exists as a carbocation which is relativly less stable than the CH₄ counterpart.

Please Approve the answer, by clicking "Yes" below!!

carbon could exists as ch3 only when it forms free radical i.e. in presence of sunlight.

free radicals r formed by homolytic cleavage of C H bond.

carbon free radical are of two types singlet and triplet(for more info. u can refer morryson&boyd)

ch4 in presence of light(u.v) breaks up into hydrogen free radical H' AND CH3' FREE RADICAL.