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Atomic properties and periodic properties

Atomic properties and periodic properties

Atomic radii:  Distance between nucleus and valence shell called atomic radii

# atomic radii increase from top to button in a group because no.  of shells increase.


#Atomic radii decrease from left to right in a period because effective nuclear charge increase between valence and nucleus.


Covalent radii:  covalent radii may be defined as one half of the distance between nucleus of two covalently atomic.



Vanderwaal radii:  one half of the distance between the nucleus of two atomic non bonded atoms of some elements.

# vanderwaal radii is always greater than covalent radii.


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