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Grade: 10
        
Calculate the radius of 1st 2nd 3rd orbits of hydrogen and helium atom
3 months ago

Answers : (2)

Arun
23048 Points
							Radius of bohr orbit i=0.529n^2/z
as for hydrogen z=1
1st orbit=0.529
2nd orbit n=2 and z=1 so =2.116
3rd orbit n=3 and z=1 so=4.775
3 months ago
Vikas TU
9517 Points
							
Bohr's Radius is given by 
rn = 0.529*n^2 /z Angestrum 
n = no. of energy level 
Z=1 
Radius of irst energy level = n=1 
r1 = 0.529* 1^2 /1 = 0.529 A
Raius of second energy level = n=2 
r2 = 0.529 * 4/1 = 2.116 A 
Radius of third energy level = n=3 
r3 = 0.529* 9/1 = 4.761 A 
 
3 months ago
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