EXERCISE 5-1 Electronic Structures of Atoms

Click on the correct answer



1 The electron configuration for boron is:
1s22s22p3
1s22s22p1
1s22s1
1s22p3
None of the previous answers.

2 The electron configuration for sulfur is:
1s22s22p63p6
1s22s22p63d6
1s22s22p63s23p4
1s22s22p63s23p2
None of the previous answers.

3 The electron configuration for manganese is:
1s22s22p63s23p64s23d5
1s22s22p63s2
1s22s22p63s23p64s24p5
1s22s22p63s23p64s23d4
None of the previous answers.

4 The electronic configuration for strontium is:
1s22s22p63s23p64s23d104p64d2
1s22s22p63s23p64s23d104p65p2
1s22s22p63s23p64s23d104p65s1
1s22s22p63s23p64s23d104p65s2
None of the previous answers.

5 The electronic configuration for bromine is:
1s22s22p63s23p64s24p65s24d7
1s22s22p63s23p64s23d15
1s22s22p63s23p64s23d104p5
1s22s22p63s23p64s23d94p6
None of the previous answers.

6 The electron configuration for argon is:
1s22s22p63s23p6
1s22s22p63s23d6
1s22s22p63p63d2
1s22s22p63s8
None of the previous answers.

7 The electron configuration for arsenic is:
1s22s22p63s23p64s24p6
1s22s22p63s23p64s23d104p3
1s22s22p63s23p64s23d13
1s22s22p63s23p64s23d104p6
None of the previous answers.

8 The element with the electron configuration 1s22s22p63s23p64s23d6 is:
iron
Ni2+
manganese
cobalt
None of the previous answers.

9 1s22s22p62d1 could be the electron configuration of::
sodium
an excited state of neon
an impossible electron configuration
sodium ion
None of the previous answers.

10 The element with the electron configuration 1s22s22p63s23p64s23d10 is
copper
krypton
galium
zinc
None of the previous answers.

11 1s22s22p63s23p54s1 could be the electron configuration of::
the ground state of potassium
the ground state of potassium ion
an excited state of argon
an impossible electron configuration
None of the previous answers.

12 Nickel has how many unpaired electrons?
0
1
2
3
None of the previous answers.

13 Arsenic has how many unpaired electrons?
0
1
2
3
None of the previous answers.

14 Sulfur has how many unpaired electrons?
0
1
2
3
None of the previous answers.

15 Calcium has how many unpaired electrons?
0
1
2
3
None of the previous answers.

16 Cadmium has how many unpaired electrons?
0
1
2
3
None of the previous answers.

17 Neodymium has how many unpaired electrons?
0
3
4
6
None of the previous answers.

18 Diamagnetic elements have no unpaired electrons and paramagnetic elements have at least one unpaired electron. Which one of the following elements would be diamagnetic?
potassium
barium
tin
iodine
None of the previous answers.

19 When the quantum numbers n,l,m,s are represented by 5,0,0,1/2, the symbolism for the electron is:
5s
5p
1s
impossible set of quantum numbers
None of the previous answers.

20 When the quantum numbers n,l,m,s are represented by 4,2,1,1/2, the symbolism for the electron is:
4s
4p
4d
impossible set of quantum numbers
None of the previous answers.

21 When the quantum numbers n,l,m,s are represented by 3,1,0,1/2, the symbolism for the electron is:
3s
3p
3d
impossible set of quantum numbers
None of the previous answers.

22 When the quantum numbers n,l,m,s are represented by 4,1,2,1/2, the symbolism for the electron is:
4s
4p
4d
impossible set of quantum numbers
None of the previous answers.

23 When the quantum numbers n,l,m,s are represented by 3,3,2,1/2, the symbolism for the electron is:
3s
3d
3f
impossible set of quantum numbers
None of the previous answers.

24 For a 6s electron the values of n,l,m,s respectively could be:
6,4,4,1/2
1,0,0,1/2
6,1,0,1/2
6,0,0,1/2
None of the previous answers.

25 For a 4p electron the values of n,l,m,s respectively could be:
4,1,0,1/2
4,1,2,1/2
4,2,2,1/2
4,0,0,1/2
None of the previous answers.

26 For a 5d electron the values of n,l,m,s respectively could be:
5,1,0,1/2
5,2,3,1/2
5,2,2,1/2
5,3,0,1/2
None of the previous answers.

27 Absorption of light by an atom causes an electron to:
be promoted from a ground state orbital to an excited orbital.
conduct electricity.
move into the nucleus.
fall to a lower energy orbital.
None of the previous answers.


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