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Even though F is more electro -ve than Cl ,CHCl 3 has more dipole moment than CHF 3 . Why??
the dipole moment doesn't only depend upon the electronegative element in the group... it depends on the bond length.. the bond length of C-Cl>C-F
the dipole moment doesn't only depend upon the electronegative element in the group...
it depends on the bond length..
the bond length of C-Cl>C-F
dipole moment = q(d) d is seperation bw atoms .... in case of CHF3 , q(charge seperation) is more than in CHCl3 due to high electronegativity of F , but due to large size of Cl atom ,distance bw C-Cl becomes more & dipoe moment of each C - Cl in CHCl3 becomes more than that of C-F in CHF3 ... hence dipole moment is more for CHCl3 ...
dipole moment = q(d)
d is seperation bw atoms ....
in case of CHF3 , q(charge seperation) is more than in CHCl3 due to high electronegativity of F
, but due to large size of Cl atom ,distance bw C-Cl becomes more & dipoe moment of each
C - Cl in CHCl3 becomes more than that of C-F in CHF3 ...
hence dipole moment is more for CHCl3 ...
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