lakeland electrons review
DESCRIPTION
Lakeland Electrons Review. Click on a question to begin. Question 1. Try Again. The question is asking about one orbital in the 4p sublevel. How many electrons can an orbital hold?. Try Again. Correct!. - PowerPoint PPT PresentationTRANSCRIPT
Lakeland Electrons Review
Click on a question to begin1 6 11
2 7 12
3 8 13
4 9 14
5 10 15
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
Try Again
Try Again
• 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.
Next Question
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
Try Again
Try Again
• 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.
Next Question
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
Try Again
Try Again
• 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
Next Question
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
Try Again
Try Again
• 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.
Next Question
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
Try Again
Try Again
• 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.
Next Question
Which element is represented by the ground state electron configuration 1s22s22p3?
A) Boron B) Carbon
C) Nitrogen D) Oxygen
Question 6
Try Again
Try Again
• 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.
Next Question
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
Try Again
Try Again
• Review the definitions on your notes.
Correct!
• The definition of an orbital is the region where an electron is most likely to be found.
Next Question
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
Try Again
Try Again
• C = wavelength x frequency
Correct!
• 3 x 108 = (5.45 x 10-7)v v = 5.50 x 1014 Hz
Next Question
Which color has the lowest frequency?
A) red B) green
C) blue D) violet
Question 9
Try Again
Try Again
• The lowest frequency waves have the highest wavelength.
Correct!
• Red light has the longest wavelength and lowest frequency.
Next Question
Which type of radiation has the smallest wavelength?
A) infrared B) ultraviolet
C) Radio waves D) gamma
Question 10
Try Again
Try Again
• The shortest wavelength waves have the highest frequency
Correct!
• Gamma radiation has the highest frequency and lowest wavelength.
Next Question
Electrons move like a
A) particle B) wave
C) Wave and particle D) Neither a wave nor particle
Question 11
Try Again
Try Again
• Electrons behave like a particle and wave, but only move like one of them.
Correct!
• Electrons move like a wave, as all matter does.
Next Question
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
Try Again
Try Again
• 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.
Next Question
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
Try Again
Try Again
• 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.
Next Question
Which of the following represents the kernel structure for chlorine?
A) [Ne]3s23p4 B) [Ne]3s13p6
C) [Ne]3s23p6 D) [Ne]3s23p5
Question 14
Try Again
Try Again
• 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
Next Question
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
Try Again
Try Again
• E = hv
Correct!
• E = (6.63 x 10-34)(5.78 x 1014)
Next Question