Lakeland Electrons Review

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What is the maximum number of electrons that can be held in a 4p orbital?

A) 2 B) 3

C) 4 D) 6

Question 1

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• The question is asking about one orbital in the 4p sublevel. How many electrons can an orbital hold?

Correct!

• A 4p orbital can hold 2 electrons. Every orbital can only hold a maximum of 2 electrons that spin in opposite directions.

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Distinct wavelengths of light are emitted when the electrons of a metal salt

A) Move from a low energy level to a high energy level

B) Move from a high energy level to a low energy level

C) Are lost D) Are gained

Question 2

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• The production of light occurs when an atom loses energy

Correct!

• A line spectrum is created when the electrons of a metal salt fall from a high energy level to a low energy level.

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Question 3Which electron transition represents a loss of energy?

A) From 2nd to 3rd shell B) From 3rd to 2nd shell

C) From 1st to 2nd shell D) From 1st to 3rd shell

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• Higher shells have higher amounts of energy.

Correct!

• When electron falls from a higher shell to a lower shell there is a loss of energy

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How many electrons are in the outermost principal energy level of an atom of oxygen in the ground state?

A) 2 B) 4

C) 5 D) 6

Question 4

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• The outermost electrons are the electrons in the outermost s and p orbitals. Add up the total electrons in the outermost s and p orbitals to get the answer.

Correct!

• Oxygen has 2 s electrons and 4 p electrons for a total of 6 electrons in its outermost level.

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Compared to the maximum number of electrons that can occupy the s sublevel, the maximum number of electrons that can occupy the p sublevel isA) Greater by two electrons B) Smaller by two electrons

C) Greater by four electrons D) Smaller by four electrons

Question 5

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• The s sublevel has 1 orbital and the p sublevel has 3 orbitals. Each orbital can hold up to 2 electrons.

Correct!

• The p sublevel can hold 6 electrons while the s sublevel can hold only 2.

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Which element is represented by the ground state electron configuration 1s22s22p3?

A) Boron B) Carbon

C) Nitrogen D) Oxygen

Question 6

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• Add up the total number of electrons and then find the element with that atomic number.

Correct!

• There are 7 total electrons. A neutral atom of nitrogen, with atomic number 7, would have 7 electrons in a neutral atom.

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The region that is the most probable location of an electron in an atom is

A) The nucleus B) An orbital

C) The excited state D) An ion

Question 7

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• Review the definitions on your notes.

Correct!

• The definition of an orbital is the region where an electron is most likely to be found.

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What is the frequency of light that has a wavelength of 5.45 x 10-7 m?

A) 3.39 x 1014 Hz B) 6.57 x 1014 Hz

C) 8.34 x 1015 Hz D) 5.50 x 1014 Hz

Question 8

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• C = wavelength x frequency

Correct!

• 3 x 108 = (5.45 x 10-7)v v = 5.50 x 1014 Hz

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Which color has the lowest frequency?

A) red B) green

C) blue D) violet

Question 9

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• The lowest frequency waves have the highest wavelength.

Correct!

• Red light has the longest wavelength and lowest frequency.

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Which type of radiation has the smallest wavelength?

A) infrared B) ultraviolet

C) Radio waves D) gamma

Question 10

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• The shortest wavelength waves have the highest frequency

Correct!

• Gamma radiation has the highest frequency and lowest wavelength.

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Electrons move like a

A) particle B) wave

C) Wave and particle D) Neither a wave nor particle

Question 11

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• Electrons behave like a particle and wave, but only move like one of them.

Correct!

• Electrons move like a wave, as all matter does.

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Which distance represents the amplitude of a wave on the picture below

A) B to C B) B to D

C) D to F D) E to G

Question 12

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• Amplitude is the distance from the mid point to the highest or lowest point.

Correct!

• B to C shows the distance from a crest to the midpoint.

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If two electrons are in a 1s orbital in an orbital diagram, how would the arrows be arranged?

A) As two up arrows B) As two down arrows

C) As an up and a down arrow D) Impossible to determine

Question 13

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• Remember that electrons must have different spins to occupy the same orbital.

Correct!

• An up and a down arrow represent two electrons spinning in opposite directions.

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Which of the following represents the kernel structure for chlorine?

A) [Ne]3s23p4 B) [Ne]3s13p6

C) [Ne]3s23p6 D) [Ne]3s23p5

Question 14

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• The kernel structure should have the last element in the row above, plus the valence shell of electrons. Make sure to have the proper number of electrons overall.

Correct!

• The kernel structure is the ten electrons in Ne plus 7 more. [Ne]3s23p5

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What is the energy of green light that has a frequency of 5.78 x 1014 Hz?

A) 1.28 x 10-20 J B) 4.76 x 10-19 J

C) 3.83 x 10-19 J D) 5.78 x 10-19 J

Question 15

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• E = hv

Correct!

• E = (6.63 x 10-34)(5.78 x 1014)

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