Chemistry Concepts and Applications

Chapter 7: Completing the Model of the Atom

Standardized Test Practice

1
In the electromagnetic spectrum, which kind of light is most likely to knock an electron out of an atom?

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A)radio waves
B)infrared
C)visible light
D)gamma rays
2
The space in which there is a high probability of finding the electron is called the __________.

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A)perimeter
B)trajectory
C)orbital
D)fractional
3
In the emission spectrum of neon (Ne) shown, which lines represent the highest energy light?

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A)The lines near 400 nm.
B)The lines near 500 nm.
C)The lines near 600 nm.
D)The lines near 700 nm.
4
What is the electron configuration for boron?

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A)[He]2s1
B)[He]2s2
C)[He]2s2 2p1
D)1s1 2s1 2p1
5
Energy sublevels are designated __________.
A)s, p, d, and f
B)a, b, c, and d
C)x, y, and z
D)1, 2, 3, and 4
6
The space in which there is a 95% probability of finding an electron is called __________.
A)an energy level
B)an energy sublevel
C)an electron sphere
D)an orbital
7
The fourth energy level can hold __________ more electrons than the third energy level.
A)2
B)6
C)10
D)14
8
1s22s22p2 is the electron configuration for __________.
A)boron
B)carbon
C)hydrogen
D)fluorine
9
What is the electron configuration of radon?
A)[Xe]6s25d104f146p6
B)[Xe]6s25d104f146p5
C)[Xe]6s25d106p6
D)[Xe]6s24f146p6
10
Except for helium, noble gas atoms have __________.
A)duets
B)octets
C)quartets
D)trios
11
What electron configuration describes the outermost energy level of a molybdenum atom?
A)5s2
B)4d4
C)6p6
D)5d4
12
What electron configuration describes the outermost energy level of a selenium atom?
A)4s24p4
B)4s23d10
C)4s24d4
D)4s24d104p4
13
If an s sublevel could contain up to three electrons, which element would be the first noble gas?
A)carbon
B)helium
C)lithium
D)neon
14
Which has its valence electron furthest from the nucleus?

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A)hydrogen
B)lithium
C)sodium
D)potassium
15
The organization of the periodic table arises from the __________ of the elements.
A)atomic mass
B)electron configuration
C)properties
D)conductivity
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