1.

According to Bohr's theory,

Answer»

when the atom gets the REQUIRED energy from the outside, electrons JUMP from LOWER orbits to higher orbits and remain there
when the atom gets the required energy from outside, electrons jump from lower orbits to higher orbits and remain there for very short intervals of TIME and return back to the lower orbit, radiating energy.
angular momentum of the electron is proportional to its quantum number
angular momentum of the electron is independent of its quantum number.

Solution :Angular momentum=`nh/(2pi)`


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