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Question

4.   What are the first two quantum numbers for the electrons located in subshell 4d?

5.   What are the first three quantum numbers for the electrons located in subshell 2s?

6.   How many electrons can be held in a sublevel l = 3?

7.   How many electrons can be held in the energy level n = 4?

8.   How many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Answer 1

#4. The first two quantum numbers are n and l which would be n=4 and l = 2

#5. The first three quantum numbers are n, l and ml which would be n= 2, l = 0 and ml = 0

#6. Sublevel l = 3 indicates an f sub shell. This can hold a maximum of 14 electrons

#7. The number of electrons in a given energy level is given by 2(n2). So for n=4, you can have 32 electrons

#8. For n = 4 and l = 3, ml can be -3, -2, -1, 0, +2, +2, and +3. Each of these can have 2 electrons (+1/2 and -1/2 spin) for a total of 14 electrons

Answer 2

#4. The first two quantum numbers are n and l which would be n=4 and l = 2

#5. The first three quantum numbers are n, l and ml which would be n= 2, l = 0 and ml = 0

#6. Sublevel l = 3 indicates an f sub shell. This can hold a maximum of 14 electrons

#7. The number of electrons in a given energy level is given by 2(n2). So for n=4, you can have 32 electrons

#8. For n = 4 and l = 3, ml can be -3, -2, -1, 0, +2, +2, and +3. Each of these can have 2 electrons (+1/2 and -1/2 spin) for a total of 14 electrons