Question

Pa Ne
ASSIGNMENT-5
D. The speed
electron in First orbit g H-atom is 2×10^6ms¹ what is the speed of electron in same orbit of helium plus atom​

Answer 1

Answer:

 

For hydrogen:

Angular momentum =mvr=  

2π

nh

​  

 

v=  

mr2π

nh

​  

 

r=0.529  

Z

n  

2

 

​  

 

So, v=  

0.529mn2π

Zh

​  

 

For hydrogen Z=1,n=1

v=  

0.529m2π

h

​  

 

For He  

+

 Z=2,n=2

v  

1

​  

=  

0.529m×2×2π

2h

​  

=v

Explanation: