The ratio of `E _(2) - E_(1)` to` E_(4) - E_(3)` for the hydrogen atom is approximately equal to -

The ratio (E_2-E_1) to (E_4-E_3) for the hydrogen atom is approximately equal to

The ratio of (E_(2) - E_(1)) to (E_(4) - E_(3)) for He^(+) ion is approximately equal to (where E_(n) is the energy of nth orbit ):

In hydrogen and hydrogen-like atom , the ratio of E_(4 n) - E_(2 n) and E_(2 n) - E_(n) varies with atomic nimber z and principal quantum number n as

In hydrogen and hydrogen-like atom , the ratio of E_(4 n) - E_(2 n) and E_(2 n) - E_(n) varies with atomic nimber z and principal quantum number n as

In hydrogen and hydrogen-like atom , the ratio of E_(4 n) - E_(2 n) and E_(2 n) - E_(n) varies with atomic nimber z and principal quantum number n as

IF log_e3=1.0986 , then log_e(9.01) approximately is

IF log_e3=1.0986 , then log_e(9.01) approximately is