" Correct order of radius of the "1^(" st ")" orbit of "H,He^(+),Li^(2+),Be^(3+)" is "

Correct order of radius of the first orbit of H, He^+, Li^(2 +), Be^(3 +) is :

Correct order of radius of the first orbit of H, He^+, Li^(2 +), Be^(3 +) is :

Calculate the radius of the I^(st) Bohr orbit of He^(+)

Calculate the radius of the I^(st) Bohr orbit of He^(+)

" The radius of "1" st "" Bohr orbit of H-atom is "0.53A^(@)" Calculate the radius of "2^(" nd ")" orbit of "He^(+)" ion.(At No.of He "=2" ) in "A^(@)

Calculate ratio of radius of 1 ^(st) orbit of H atom to Li ^(+2) ion :

The ratio of radii of first orbits of H, He^(+) and Li^(2+) is

The ratio of radii of first orbits of H, He^(+) and Li^(2+) is:

The ratio of radii of first orbits of H, He^(+) and Li^(2+) is:

The correct order of atomic radius of Li, Be and B is