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Grade 11Inorganic Chemistry

1)An atom has a mass of 0.02 kg and uncertainity inits velocity is 9.218x10^-6 m/s then, find the uncertainity in its position (h= 6.626x10^-34 Js)
2) Energy of H-atom in the ground state is -13.6 eV, find energy in the second excited state
3) Find the set of quantum numbers for 4f orbital
4) Find the wavelength of the radiation emitted, when in a hydrogen atom electron falls from infinity to stationary state 1.
5) Find the highest sets of quantum numbers that represent the highest energy of an atom

Profile image of Shadow The Hedgehog
7 Years agoGrade 11
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1 Answer

Profile image of Arun
7 Years ago
Dear student
 
Please ask only one question in one thread.
 
3).
 

in the case of a 4f orbital, we have n=4.

The letters correspond to the angular momentum quantum number in the following way:

s : l = 0

p : l = 1

d : l = 2

f : l = 3

(Historical note: the origin of the letters is from spectroscopy and they refer to sharp, principle, diffuse, and fundamental, respectively)

TL;DR 4f means n = 4, l = 3