What is the value of the angular momentum quantum number for the single electron

Question

What is the value of the angular momentum quantum number for the single electron found in 4p? The familiar yellow light (lambda = 590 mm) from a low pressure street lamp results from 3p 3s transition in sodium. Suppose a transition occurs from 4p 3s. Would the resulting wavelength _?__. greater than 590nm. less than 590mm. equal to 590nm. what is the maximum number of orbitals based on the following quantum number information-n = 3, l=2. 0 1 2 3 4 5 6 7 The emission spectrum of an unknown atom contains six visible wavelengths (in nm) 425 573 505 645 546 484 The maximum light output (intensity) occurs at 484nm. Which of the six emission wavelengths,

Explanation / Answer

(7) (b)

Since the energy gap between 4p and 3s is greater than 3p and 3s, it requires hihger energy. Hence lower wave length.

So, the wave length is less than 590 nm

(8) (f)

n = 3 and l =2 , it is 3d subshell.

for a given 'l' value, number of orbitals = 2l + 2 = 2(2)+1 = 5 orbitals are there

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