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 fieldi) n = 1, l = 0, m = 0 ii) n = 2, l = 0, m = 0iii) n = 2, l = 1, m = 1 iv) n = 3, l = 2, m = 1v) n = 3, l = 2, m = 0
de-Broglie proposed the dual nature of electron and put forward his wave concept.The wave length of electron in an orbit was given by λ=hmv
The density of 2 M aqueous solution of NaOH is 1.28 g/cm3. The molality of the solution is [Given that molecular mass of NaOH = 40 g mol-1]
