 # Whats the meaning of these lines:the angular momentum can have values such as h/2π,2h/2π,3h/2π….,etc.but it cannot have a fractional value.

9 years ago

net torque is zero during circular moiton due to presence of only central forces as a result angular momentum is conserved.
ang mom=(mv)r=pr=hr/(lambda)
now the wavelenth must be a part of the circumferance 2(pi)r/n
putiing the value.
ang mom=nh/2pi

9 years ago
According to Bohr''s second postulate, the electrons revolving in nuclear orbits of principal quantum numbers ''n'' can have only those values of angular momentum which are integral multiples of h/2p (i.e. mvr = nh/2p) . Therefore, fractional values of angular momentum are not allowed.
9 years ago

It means that angular momentum of an electron cannot just take any value. It is specific for different shells. It assume only dicreet values and thus the angular momentum of an electron is quantisized:

Angular momentum=mvr=nh/2pi

9 years ago

what havnt u undertood...??? u disapproved it!??
was it the wavelenght=2pie r/n ??
ok heres it :- the (wavelenght) .(a natural no.)=total circumference=2.pie.r
[this must be satisfied in order the electron''s orbit is completed]
hence,ang. mom.=nh/2pi
it depicts the ang mom. can only take integral values of h/2.pi
Plz approve

9 years ago

According to Bohr''''s second postulate, the electrons revolving in nuclear orbits of principal quantum numbers ''''n'''' can have only those values of angular momentum which are integral multiples of h/2p (i.e. mvr = nh/2p) . Therefore, fractional values of angular momentum are not allowed.