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Revision Chapter 1: Electrons In Atoms
Test Description: Revision of chapter 1 section 2 and 3
Instructions: Answer all questions to get your test result.
1) How many electrons total can reside in p orbital level?
A
3
B
2
C
6
D
8
2) What is the maximum theoretical number of electrons related to the fifth principal energy level of an atom?
A
8
B
32
C
18
D
2
3) Using noble-gas notation, what is the ground-state electron configuration of Cd (atomic number 48)?
A
Xe5s24d10
B
Ar4s23d10
C
Kr5s24d10
D
Kr4d104f2
4) What is the element that has the ground-state electron configuration Xe6s24f145d6?
A
Ti
B
La
C
W
D
Os
5) What is the complete electron configuration of a scandium atom (atomic mass 21)?
A
1s2 2s2 2p5 3s2 3p5 4s2 3d1
B
1s2 2s2 2p6 3s2 3p6 4s2 3d1
C
1s22s12p73s13p74s23d1
D
1s2 2s2 2p7 3s2 3p7 4s2 3d1
6) What sublevel is not found in the quantitative description of the atom?
A
2d
B
3d
C
2s
D
4s
7) How many orbitals are there in the fourth principal energy level?
A
9
B
4
C
1
D
16
8) What predicts that all particles in motion have wave characteristics?
A
The de Broglie equation
B
The Heisenberg uncertainty principle
C
Bohr’s model of atom
D
The aufbau principle
9) What states that each electron occupies the lowest available energy orbit?
A
Pauli exclusion principle
B
Rutherford rule
C
Hund’s rule
D
Aufbau principle
10) If the wavelength of the infrared rays is 3.0 × 10-5 m .What is its frequency in (HZ)?
A
1.0 ×10 to the power of -5
B
1.0 ×10 to the power of -13
C
1.0 ×10 to the power of -8
D
1.0 ×10 to the power of 13
*select an answer for all questions
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