1.

Describe the general trends in the following properties of the elements in Groups-14 Atomic size

Answer»

Solution :Atomic SIZE: In group 14 atomic radius is referred as covalent radius. There is a considerable increase in covalent radius from C to Si, there after from Si to Pb a small increase in radius is observed.
This is DUE to the PRESENCE of completely FILLED d and f-orbitals in heavier members due to screening effect


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