IIT JEE , AIEEE Forum - Chemistry , Inorganic Chemistry

salman786

what is fajan's rule??

sahilgupta_iit

according to fajan's rule,
the COVALENT character in the bond is MORE if,
1) the charge density of tha cation is high i.e. the cation is small in size and has high charge
2) the anion is large in size i.e. low charge density

plz rate

deedee

fajan's rule states that(4 more covalent nature)

d cation shud b small in size

d anion shud b large in size

d charge on ctaion and anion shud b large

natur of madium (solvent) shud hav more diecletric constant

eclrtonic configuration of ction (psedo elctronic configuration)

salman786

thankss yaaaaaroooooooooooooo

ashish_banga

SMALLER IS THE SIZE OF CATION AND GREATER IS THE SIZE OF ANION GREATER IS THE COVALENT CHARACTER
ALSO COVALENT CHARACTER ALSO INCREASES WHEN THE CATION OR ANION HAS PSEUDO NOBLE GAS CONFIGURATION

K4FECN6

Just as all the covalent bonds have some partial ionic character,the ionic bonds also have partial covalent character.The partial covalent character of ionic bonds
is given by FAJAN'S rule.

The rule states that :

1.The smaller the size of the cation and the larger the size of the anion,the greater the covalent character of the ionic bond.
2.The greater the charge on the cation,the greater the covalent character
of the ionic bond.
3.For cations of the same size and charge the one with electronic config.
typical of transition elements, is more polarising than the one with a noble
gas config. which is typical of alkali and alkaline earth metal cations.

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salman786

wat type of bond is present in POX3??????REPLY FAST PLZZZZZZZZZZZ

salman786

I AM WAITING FOR ANS??????AND HOW SHOULD WE FIND THAT???

srinathmurthy

This is the structure of POX3 , Where X-halogen

salman786

IF THEY GIVE US A COMPLEX COMPOUND AND ASK US TO FIND THE TYPE OF BOND THEN WE MAY NOT REMEMBER THE STRUCTURE THEN HOW SHOULD WE FIND????

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