In a multi - electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic and electric field
i) n = 1, l = 0, m = 0 ii) n = 2, l = 0, m = 0
iii) n = 2, l = 1, m = 1 iv) n = 3, l = 2, m = 1
v) n = 3, l = 2, m = 0