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Energy Calculations
Valence electrons
Electron Configurations
Ionization/ electronegativity
Whatever
100
How do you determine the frequency of a wave when looking at a diagram?
What is 1 divided by the time (1 wave / time(s) )
100
Which is the correct number of valence electrons in the element Lithium?
What is one
100
Which element has the electron configuration 1s22s22p63s23p64s23d4
What is Chromium (Cr)
100
Which property describes how much energy must be added to an atom to remove an outermost electron
What is ionization energy
100
What is the correct electron dot structure for the element Fluorine (F)?
What is F with 7 dots
200
What is the relationship between wavelength and energy?
What is inverse: long wavelength = low energy.
200
What is the correct electron dot diagram for the element Silicon (Si)?
What is Si / 4 dots
200
Which is the correct electron configuration for the element Molybdenum (Mo)?
What is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d4
200
Describe the trend of ionization energy that occurs in the periodic table.
What is Increases as you move across the periods and decreases as you move down the group
200
What group contains the halogen family of elements
What is group 17
300
What is the amount of energy carried by a photon that has a frequency of 5.71 x 1014 Hz?
What is 3.78 x 10-16 kJ
300
Which family of elements contains elements with two valence electrons?
What is alakine earth metals
300
Which block on the periodic table contains the actinide series of elements?
What is f block
300
Which element is more electronegative? Bromine, or oxygen? Why
What is oxygen. Valence shell is almost full, and will steal element's electrons to complete its shell.
300
Which group contains elements with an electron configuration that ends with p3?
What is group 15
400
A part of visible light has frequency 7.90 x 1016 s–1. Calculate its wavelength.
What is 3.8 x 10-9 m
400
What is the most important characteristic in detemining an element’s chemical properties?
What is the number of valence electrons it contains
400
Which is the energy level that is being filled by electrons in the transition elements of period 5?
What is fourth
400
Why do atomic radii increase as you move down a group?
What is those elements contain more energy levels, so the outer electrons are futher from the nucleus and feel thus feel the pull less.
400
Write the noble gas form of the electron configuration and the electron dot structure of selenium
What is The noble gas form of the electron configuration of selenium is [Ar]4s24p4. Se 6 dots
500
A radiostation broadcasts a program at 122.9 MHz. Calculate the wavelength
What is 2.441 m
500
What is the ground state electron configuration of chlorine and the number of valence electrons in it
What is The ground state electron configuration of chlorine is 1s22s22p63s23p5. It has 7 valence electrons
500
Identify the period and group numbers of the element with the electron configuration. [Ne]3s23p4
What is Period 3, Group 16
500
Why is the size of a sodium ion (Na+) less than that of a sodium atom (Na)?
The loss of an electron from a sodium atom results in a smaller radius. The electrostatic repulsion between the remaining number of electrons decreases thus allowing them to be pulled closer to the nucleus. Therefore, the size of a sodium ion (Na+) is less than that of a sodium atom (Na).
500
Identify the element having the largest size and the element having the highest electronegativity from the list of electron configurations given below: a. [Ne] 3s2 3p3 b. [Ne] 3s2 3p4 c. [Ne] 3s2 3p5 d. [Ne] 3s2 3p3 4s2 3d3
What is The element having the largest size has an electron configuration of [Ne] 3s2 3p3 4s2 3d3. The element having the highest electronegativity has an electron configuration of [Ne] 3s2 3p5.