Q:2 why Flourine has dissociation energy than Chlorine and bromine?
Ans :
Cl2 > Br2 > F2 > I2
1. bond dissociation energy decreases down the group from chlorine to iodine
an exceptional case of Flourine which have less than the chlorine and bromine
there are two factors for this
2. Bond length .... bond length increases down the group from chlorine to iodine . thats why bond dissociation is inversaly proportional to bond length 3. Repulsion forces ........... repulsion factor is more strong factor than bond length
this factor is present in Flourine due to small size
thats why flourine has lower value than chlorine and bromine
Regards
Malik Xufyan
Bromine is a chemical element with the symbol Br and an atomic number 35. It is a fuming red-brown liquid at room temperature. Organic bromine compounds are easily dissociated to generate free bromine atoms at high temperatures, bromine series
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