WorksheetsUnit 3 Review
Total questions: 25
Worksheet time: 38mins
What element has the noble gas configuration [Ne]3s2 3p2?
Aluminu
Silicon
Rubidium
Tungston
What element has the noble gas configuration [He]2s1?
Helium
Beryllium
Lithium
Hydrogen
What element has the electron configuration 1s2 2s2 2s6 3s2 3p6 4s1?
Beryllium
Calcium
Potassium
Sodium
What element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d5?
Iron
Manganese
Magnesium
Molebdenum
How many valence electrons (dots in a LDS) would Na have?
4
3
2
1
How many valence electrons (dots in a LDS) would As have?
5
4
3
8
How many valence electrons (dots in a LDS) would Ne have?
1
7
9
8
What electron configuration would 2 up arrows in a 4d orbital notation correspond to?
2d4
4d2
Impossible to tell
2345d4543456
What element would end with 3 up arrows in the 4p orbital?
Arsenic
Sulfur
Selenium
Germanium
T or F? When following period numbers to find energy levels, you subtract one when moving into the d orbitals.
True
False
Fill in the blanks. Fusion is when two atoms _______. Fission is when an atom ______.
Splits/ splits
Splits/ fuse
Fuse/ splits
Stay up until 2 am playing Roblox/ goes to bed on time.
Fill in the blank. Positron emission turns a ____ into a ____, lowering the atomic number.
Proton/neutron
Electron/neutron
Neutron/proton
Electron/proton
What type of decay/emission raises the atomic number and emits an electron?
Alpha
Gamma
Positron
Beta
As frequency and energy goes up, wavelength goes___.
No change
Up
Down
goes to jail and does not collect $200
Find the energy of a wave with a wavelength of 5.7 x 10^-11 m?
5.9x10^56
2.8x10^-34
3.5x10^-15
6.2x10^-9
Which element is a alkali earth metal with electrons in 3 energy levels?
Beryllium
Calcium
Magnesium
Mangenese
Which electro-magnetic wave has the highest frequency?
Radio waves
Gamma waves
Visible light
X-Rays
Which energy-level change emits the lowest energy?
2 -> 1
4 -> 1
3 -> 2
4 -> 3
How many unpaired electrons are there in an atom of Bromine in its ground state?
1
6
7
2
T or F? You must fill in all "slots" in an orbital group with up arrows before using down arrows.
True
False
How many electrons are in the 3rd energy level for an element with the configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10
8
16
18
12
Atomic radius _____ as you go down the periods, and _______ as you move along the groups.
increases, does not change
decreases, increases
does not change, increases
increases, decreases
Ionization energy _____ as you go down the periods, and _______ as you move along the groups.
increases, does not change
decreases, increases
does not change, increases
increases, decreases
Rank in order of increasing ability to penetrate a substance:
Alpha < Gamma < Beta
Beta < Gamma < Alpha
Gamma < Beta < Alpha
Alpha < Beta < Gamma
Light is emitted when an electron _____ an energy level.
jumps up
falls down
does the Griddy into
slides into
