When I was taught energy levels in a hydrogen atom – I was given the formula ;Energy = -13.6/n^2.
(1)What purpose does that minus sign signify?
(2)If energy in the first Bohr orbit is -13.6 and in the second one is -3.4 is:
(a) The energy in the second orbit greater as
-3.4 > -13.6 or
(b) The energy in the first orbit is greater as
|-13. 6| > |-3.4|?
Is there a better way to look at the energy values (as the minus sign is confusing)?