Polarization favoured by which of the following
Large size anion
Small size of cation
High magnitude of cation
Low magnitude of anion
Answers
Anion-cation interaction (anion-cation attraction; cation-anion interaction; ionic bond): A noncovalent (van der Waals) attractive force caused by electrostatic (opposite charge) attraction between an anion and a cation. Also called by the less precise name 'ionic force'.
Iron (Fe2+), Sodium (Na+), Lead (Pb2+) are few examples of cations, while Fluoride (F-), Bromide (Br-), Iodide (I-), Nitride (N3-) and Hydride (H-) are examples oSmall size of cation:
Smaller size of cation greater is its polarizing power i.e. greater will be the covalent nature of the bond.
(2) Large size of anion:
Larger the size of anion greater is its polarizing power i.e. greater will be the covalent nature of the bond.
(3) Large charge on either of the two ions:
As the charge on the ion increases, the electrostatic attraction of the cation for the outer electrons of the anion also increases with the result its ability for forming the covalent bond increases.
(4) Electronic configuration of the cation:
For the two ions of the same size and charge, one with a pseudo noble gas configuration (i.e. 18 electrons in the outermost shell) will be more polarizing than a cation with noble gas configuration (i.e., 8 electron in outer most shell).
f anions