Chemistry Concepts and Applications

Chapter 7: Completing the Model of the Atom

Chapter Test Practice

1
In the electromagnetic spectrum, which kind of wave has the longest wavelength?

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A)microwaves
B)infrared waves
C)ultraviolet waves
D)x-rays
2
What is the principle that led to the electron cloud model?

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A)The Bohr Complimentarity Principle
B)The Einstein Mass-Energy Relation
C)The Rutherford Scattering Model
D)The Heisenberg Uncertainty Principle
3
Suppose an atom gives off the following colors of light: orange, green, blue, violet. Which represents the greatest jump of an electron within that atom?

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A)orange
B)green
C)blue
D)violet
4
What is the electron configuration for chlorine (Cl)?

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A)[He]5s2
B)[Xe]5s2
C)[Ar]5s2
D)[Ne]3s23p5
5
An electron in an atom emits energy in the form of light when it __________.
A)falls back to a lower energy level
B)rises to a new energy level
C)leaves the atom
D)leaves the nucleus
6
How many electrons may be contained in a p sublevel?
A)three
B)six
C)eight
D)ten
7
The Heisenberg uncertainty principle states that it is fundamentally impossible to know both the __________ of the electron at the same time.
A)position and energy
B)mass and size
C)mass and position
D)energy and orientation
8
The underlying reason that some periods have eighteen elements is that the combined __________ sublevels may contain 18 electrons.
A)s, p, and d
B)d and f
C)p and d
D)s, p, d, and f
9
What element has the electron configuration [Ar]4s23d3?
A)arsenic
B)nitrogen
C)scandium
D)vanadium
10
When an iron atom loses all its 4s electrons and one 3d electron, what is its electric charge?
A)3+
B)5+
C)11+
D)6+
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