Find total energy, `PE & KE` of electron in :
(A) `2^(nd)` orbit of `He^(+)` ion.
(B) `1^(st)` excited state of `Be^(+3)` ion.

Energy of electron moving in the second orbit of He^(+) ion is

The radius of the 2 ^(nd) orbit of B ^(4+) ion is

The total energy of an electron in He^(+) ion in 2nd orbit is -xJ .If the "KE" of an electron is 2nd excited state of Li^(2+) ion is (a.x) "J",find "a".

The total energy of an electron in He^(+) ion in 2 nd orbit is -xJ .If the KE of an electron in 2 nd excited state of Li^(2+) ion is (a.x) J ,find a .

Find ratio of radius of 2^(nd) orbit of He^(+) ion & 3^(rd) orbit of Be^(+3) ion.

Find ratio of radius of 2^(nd) orbit of He^(+) ion & 3^(rd) orbit of Be^(+3) ion.

Find ratio of radius of 2^(nd) orbit of He^(+) ion & 3^(rd) orbit of Be^(+3) ion.

Find ratio of velocities of electrons in 2^(nd) excited state of Li^(+2) ion & 3^(rd) excited state of H-atom.

Find ratio of velocities of electrons in 2^(nd) excited state of Li^(+2) ion & 3^(rd) excited state of H-atom.

Find ratio of velocities of electrons in 2^(nd) excited state of Li^(+2) ion & 3^(rd) excited state of H-atom.