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SIR WHAT IS THE RELATION BETWEEN ATOMIC RADDI AND ATOMIC NUMBER . IF THERE IS NO RELATION THEN KINDLY SUGGEST A METHOD TO CALCULATE ATOMIC RADIUS.
Dear student,
The distance from the nucleus to the outermost shell depends on the electrostatic attraction (nuclear charge) that the nucleus exerts on the electrons of the outer shell. More the nuclear charge closer are the shell and electrons, hence smaller is the atomic radius of an atom.
With the increase in the atomic number (increased number of protons, electrons and neutrons) in the 3rd period, the net positive charge of the nucleus gradually increases. This increased positive charge exerts a greater attraction on the shells and attract the electrons in the shells a little closer to the nucleus. Hence, sodium has the largest atom and chlorine the smallest. This is true of other periods as well.
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Askiitians Expert
Sagar Singh
B.Tech, IIT Delhi
r=0.0529 Z2/n2 nm
z is atomic no
n is orbital of last electron
plz rate if useful
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