The radius of first Bohr orbit of hydrogen atom is `0.529 overset(@)A`. Calculate the radii of the third orbit of `He^(+)` ion

The radius of 2nd Bohr's orbit of an electron in H - atom is 2.12 overset @A .Calculate th radius of 3 rd orbit of the same atom.

The radius of the first electron orbit of a hydrogen atom is 0.5overset(@)A . The electron moves in this orbit with a uniform speed of 2.2xx10^(6)m.s^(-1). What is the magnetic field produced at the centre of the nucleus due to the motion of this electron?

The radius of first orbits of hydrogen atom is called Bohr radius. (True /false).

The energy of an electron in nth orbit of hydrogen atom is

Fill ups: The radius of first orbit of hydrogen atom is called………………..radius.

Write down the expression for the radii of orbits of hydrogen atom.Calculate the radius of the smallest orbit.

Calculate the radius of third orbit of hydrogen atom. Compare it with the same radius of second Bohr orbit of singly ionised helium atom.