1. How many electrons in an atom can have quantum numbers n=3 and m s = 1/2 2. A
ID: 497922 • Letter: 1
Question
1. How many electrons in an atom can have quantum numbers n=3 and ms = 1/2
2. A plot of the Maxwell-Boltzmann distribution for two different gases at the same temperature shows that:
A.
the average speed of both gases is the same.
B.
the average speed of the gas with the higher molar mass is faster.
C.
the average speed of the gas with the lower molar mass is faster.
D.
the gas with the higher molar mass exhibits a broader range of speeds.
E.
the most probable speed of either gas is slightly faster than its average speed.
3.
4.
Which set of quantum numbers could correspond to one of the valence electrons in Sr?
A.
n = 4, l = 1, ml = 0
B.
n = 4, l = 1, ml = 1
C.
n = 5, l = 0, ml = 0
D.
n = 5, l = 0, ml = 1
E.
n = 5, l = 1, ml = 1
A.
the average speed of both gases is the same.
B.
the average speed of the gas with the higher molar mass is faster.
C.
the average speed of the gas with the lower molar mass is faster.
D.
the gas with the higher molar mass exhibits a broader range of speeds.
E.
the most probable speed of either gas is slightly faster than its average speed.
3.
y (mm) 1 3 4 5 (cm) Estimate the frequency of the wave shown above A. 5.0 x 109 s O 7.5 x 109 s-1 1.5 x 10 0 s-1 C. D. 1.0 x 10 11 s-1 E. 2.0 x 10 11 s-1Explanation / Answer
1)
for given n , number of electrons can be 2n^2
n^2 with ms=+1/2 and n^2 with ms=-1/2
so,
number of electron with ms = 1/2 will be n^2
= (3)^2 = 9
Answer: 9
i am allowed to answer only 1 question at a time
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