Identify the set of allowed quantum numbers (n, l, m l , m s ). n = 3 l = 3 m l
ID: 825115 • Letter: I
Question
Identify the set of allowed quantum numbers (n, l, ml, ms).
n = 3
l = 3
ml = 3
ms = +1/2
n = 2
l = 1
ml = -1
ms = +1/2
n = 1
l = 2
ml = 0
ms = -1/2
n = 1
l = 2
ml = -2
ms = +1/2
Identify the correct electron configuration for the ion after one electron has been removed.
lithium ion = 1s1
magnesium ion = [Ne] 4s1
potassium ion = [Ar] 4s2
sodium ion = [Ne]
Which statement is TRUE?
Electrons may be used to excite an atom. The electron is destroyed in this process.
For the hydrogen atom, as the principal quantum number n increases, the energy levels converge (get closer in energy). An identical pattern is found for Hg, He, and Na.
Photons are emitted as electrons move from a higher to a lower energy level.
Photons emitted from a discharge lamp for a particular element can have any energy.
n = 3
l = 3
ml = 3
ms = +1/2
n = 2
l = 1
ml = -1
ms = +1/2
n = 1
l = 2
ml = 0
ms = -1/2
n = 1
l = 2
ml = -2
ms = +1/2
Explanation / Answer
4.(b)
n = 2
l = 1
ml = -1
ms = +1/2
All others are wrong because for n=x we can have maximum l of x-1
5.sodium ion = [Ne]
Because: Neon has 10 electron and so does Na+
6.Photons are emitted as electrons move from a higher to a lower energy level.
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