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Exam 4: The Modern Model of the Atom

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Question 41

Multiple Choice

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Match each element with the most likely valence charge. -Si

A) (+4 or -4)
B) (0)
C) (-2)
D) (+1)
E) (+2)
F) (-3)
G) (+3)
H) (-1)

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Question 42

Multiple Choice

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Which of the following anions will have the electronic configuration 1s²2s²2p⁶3s²3p⁶?

A) K^1-
B) Cl^1-
C) S^2-
D) Br^1-

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Question 43

Multiple Choice

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Match the following species with the corresponding electronic configuration. -Mg²⁺

Should an oxygen atom (O) gain two electrons, it would then have the same ground state electronic configuration as an atom of neon (Ne), thus satisfying the octet rule.

What is the wavelength (in meters) of radio waves that have a frequency of 89.9 MHz? (wavelength × frequency = speed of light; speed of light = 3.0 × 10⁸ meters/sec.)

Predict the formula of the compound produced in a reaction between barium (Ba) and oxygen (O) .

Microwave is radiation of a lower energy than that of visible light.

Which of the following elements is the smallest size chalcogen?

The units of h (Planck's constant) are ________.

The total number of electrons that can be accommodated in 3d is ________.

The frequency of infrared radiation that has a wavelength of 1.5 × 10³ nm is 2.0 × 10⁷ sec^-1 (given: speed of light = 3.0 × 10⁸ m/sec).

List the sublevels of the n = 3 principal energy level, and state the maximum number of electrons contained within each of these sublevels.

Match each element with the most likely valence charge. -O

Match each element with the most likely valence charge. -Br

Match each element with the most likely valence charge. -Li

Classify each of the following as ground state, excited state, or impossible electronic configurations. -1s²2s²2p⁶3s¹3p³

Match the following species with the corresponding electronic configuration. -S^2-

Modern scientists accept the notion that electrons are found in circular orbits around a central, positively charged nucleus.

A non-metal is an element that tends to ________ valence electrons in chemical reactions, becoming a(n) ________ in the process.

An electron in the excited state does not necessarily return to a ground state in a single jump.