What is homolytic and heterolytic cleavage ??

if Br2 breaks into 2Br then it's two bromine atom am I correct

which will have its original valence electrons that was used in making bonds

2 Br radical if it undergo homolytic cleavage

if Br2 undergo heterolytic cleavege then Br+ cation & Br- anion is generated

In heterolytic cleavage, one atom gets both of the shared electrons.

Homolytic cleavage is the breaking of a covalent bond in such a way that each fragment gets one of the shared electrons. The word homolytic comes from the Greek homoios, "equal", and lysis, "loosening".

check this image

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only that one electron will be involved in reaction

yee

it is game of breaking of bond. homolytic fission takes place in photolytic condition where both the atoms get single electrons so free radicals are formed

while in the presence of reagent, bond fission takes place in such a way thay one atom get both the election so it is negative while another gets non on election so positive charge atom

these are known as ions

got it now?

This bond cleavage occurs mainly due to electronegativity difference

now got this???

yes

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but the molecule breaks into atom ??

which will have same number of valence electrons

yes take the example of Br-Br...they both share one bonding electron after homolytic bond cleavage mainly in presence of light...so 7 electrons on both

so how many electrons can be involved in a free radical reaction

free radical is just only the breakage of bond via homolytic fission...so 1 electron acquire by each atom and which they used for bonding again with another free radical