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while moving across left to right in the periodic table the atomic size

rajamanickam , 6 Years ago
Grade 12th pass
anser 3 Answers
Mahima Kanawat

Last Activity: 6 Years ago

Dear student 
While moving left to right in periodic table atomic size decreases but inert gases has maximum radii due to vanderwaal radius . 
WITH REGARDS 
MAHIMA 
ASKIITIANS FORUM EXPERT 

REENU SIVADARSHINI.M

Last Activity: 6 Years ago

Atomic Radius / SIZE . 
     ATOMIC RADIUS OF AN ATOM  IS DEFINED  AS THE DISTANCE  BETWEEN THE  CENTER  OF ITS NUCLEUS  AND THE  OUTERMOST SHELL CONTAINING  THE VALENCE ELECTRON .
 VARIATION IN PERIOD :
      ATOMIC RADIUS TEND TO  DECREASE  IN A PERIOD . 
 VARIATION  IN GROUP :
     ATOMIC RADIUS  OF ELEMENTS  INCREASE DOWN THE GROUP 
  [ BOTH ATOMIC RADIUS AND ATOMIC SIZE ARE SAME ]

N.R Pramath

Last Activity: 6 Years ago

Atomic radii decreases when we move from left to right across periodic table that is when we move left to right in a period because the number of valence electrons increases and the attraction between electron and the nucleous increases hence the shell shrinks towards the nucleous.

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