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WorksheetsCHEM Test 7 (9th) 21-22
Total questions: 15
Worksheet time: 10mins
What is the electron configuration of an atom?
It is the way in which the electrons revolve around the nucleus.
It is the number of protons and neutrons in the nucleus
None of the above
According to Bohr's atomic theory, electrons
revolve in different energy levels or SHELLS
revolve in a unique energy level around the nucleus
None of the above
Energy levels, or shells, are represented as
n= 1, 2, 3, 4, 5, 6, 7
l= s, p, d, f
ml = +1/2, -1/2
According to the picture, we can say
4s orbital should be filled with e- before a 3d orbital
3s orbital should be filled with e- before a 2p orbital
5s orbital should be filled with e- before a 4p orbital
2p4 means
There are 4 electrons, in a subshell p, in the 2nd shell
There are 2 electrons, in a subshell p, in the 4th shell
None of the above
Subshells are represented as
l= s, p, d, f
n= 1, 2, 3, 4, 5, 6, 7
none of the above
The d subshell can hold a maximum of
6 e-
10 e-
14 e-
The f subshell can hold a maximum of
6 e-
10 e-
14 e-
The p subshell can hold a maximum of
6 e-
14 e-
10 e-
The s subshell can hold a maximum of
10 e-
14 e-
2 e-
Can we fill a subshell with less e- than its maximum capacity?
Yes
No
4th energy level has more energy than 1st energy level
4th energy level has less energy than 1st energy level
4th energy level has the same energy than 1st energy level
Why are the Pauling's Diagonals important?
The following electon configuration belongs to
1s2 2s2 2p4
C (z=6)
O (z=8)
Ne (z=10)
The following electon configuration belongs to
1s2 2s2 2p6 3s2
Na (z=11)
Mg (z=12)
Ne (z=10)
