Which level of the doubly ionized lithium has the same energy as the ground state energy of the hydrogen atom? Compare the orbital radii of the two levels.

Which level of the single ionized carbon has the same energy as the ground state energy of hydrogen atom ?

Which energy state of doubly ionized lithium Li^(++) has the same energy as that of the ground state of hydrogen?

Which enrgy state of doubly ionized lithium (Li^(++) has the same energy as that of the gorund state of hydrogen?

Which enrgy state of doubly ionized lithium (Li^(++) has the same energy as that of the gorund state of hydrogen?

Which energy level of C^(5+) ion will have the same energy as that of ground state of hydrogen atom?

N^(th) level of Li^(2+) has the same energy as the ground state energy of the hydrogen atom. If r_(N) and r_(1) be the radius of the N^(th) Bohr orbit of Li^(2+) and first orbit radius of H atom respectively, then the ratio (r_(N))/(r_(1)) is