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WorksheetsCUA 2 Review: Electrons and The Periodic Table
Total questions: 40
Worksheet time: 20mins
Periods are in
horizontal rows.
vertical columns.
Groups are in
horizontal rows.
vertical columns.
The number of valence electrons can be determined by the group.
True
False
The atomic number increases as you move from the top to the bottom in a group.
True
False
Which of the following is the correct Lewis Valence dot structure for oxygen?
Which of the following is the correct Lewis Valence dot structure for lithium?
Which of the following is the correct Lewis Valence dot structure for boron?
Which of the following is the correct Lewis Valence dot structure for neon?
Which of the following is a physical property that Mendeleev used to design the periodic table?
oxidation rate
reactivity with metals
crystalline structure
atomic mass
Which of the following best describes the elements within the group of the periodic table that contains neon and argon gas?
Gaseous at room temperature and highly reactive with metals.
Solid at room temperature and mildly reactive with strong acids.
Gaseous at room temperature and mostly unreactive.
Solid at room temperature and mostly unreactive with strong acids.
Which of the following best describes the elements within the group of the periodic table that contains chlorine and fluorine gas?
Gaseous at room temperature and highly reactive with metals.
Solid at room temperature and mildly reactive with strong acids.
Gaseous at room temperature and mostly unreactive.
Solid at room temperature and mostly unreactive with strong acids.
Which halogen has the highest ionization energy?
fluorine
chlorine
bromine
iodine
Which halogen has the lowest ionization energy?
fluorine
chlorine
bromine
iodine
Atoms of elements in a group on the Periodic Table have similar chemical properties. This similarity occurs because of the atom's
atomic mass
valence electrons
atomic orbitals
principle energy levels
What is the atomic number of Lithium?
7
4
3
6.941
What is the atomic number of Nitrogen?
7
4
3
14.0067
Which noble gas has the largest atomic radius?
Krypton
Radon
Xenon
Neon
Which noble gas has the smallest atomic radius?
Krypton
Radon
Xenon
Neon
What type of relationship does frequency have with wavelength?
Direct
Indirect
What type of relationship does frequency have with energy?
Direct
Indirect
Which of the following is the correct electron configuration for sodium?
1s2 2s2 2p6 3s1
1s2 2s2 2p6
1s2 2s2 2p6 3s2
1s2 3s2 2p6 3s1
Which of the following is the correct electron configuration for neon?
1s2 2s2 2p6 3s1
1s2 2s2 2p6
1s2 2s2 2p6 3s2
1s2 3s2 2p6 3s1
Which of the following is the correct electron configuration for magnesium?
1s2 2s2 2p6 3s1
1s2 2s2 2p6
1s2 2s2 2p6 3s2
1s2 3s2 2p6 3s1
Which of the following is the correct electron configuration for sulfur?
1s2 2s2 2p6 3s1
1s2 2s2 2p6
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s2 3p4
Which of these statements correctly describes a trend in atomic radii in the periodic table?
The atomic radius decreases from top to bottom in a group.
The atomic radius increases from left to right across a period.
The atomic radius remains constant from right to left across a period.
The atomic radius increases from top to bottom in a group.
Which group of elements have the most reactive metals?
Metalloids
Alkali earth metals
Halogens
Alkali metals
Which of the following elements is classified as a metal?
bromine
lithium
helium
sulfur
In which of the following lists are the elements in order of increasing electronegativity?
Cl, P, Mg, Na
P, Mg, Cl, Na
Na, Mg, P, Cl
Mg, P, Cl, Na
In which of the following lists are the elements in order of decreasing electronegativity?
Cl, P, Mg, Na
P, Mg, Cl, Na
Na, Mg, P, Cl
Mg, P, Cl, Na
Elements that have 8 electrons in their outermost energy level are considered?
products
reactants
reactive
chemically stable
The diagram shows the electromagnetic spectrum.
Which type of electromagnetic wave has the longest wavelength?
ultraviolet rays
radio waves
gamma rays
infrared waves
The diagram shows the electromagnetic spectrum.
Which type of electromagnetic wave has the shortest wavelength?
ultraviolet rays
radio waves
gamma rays
infrared waves
The diagram shows the electromagnetic spectrum.
Based on the diagram, a wave with a long wavelength would have relatively
a high energy and a low frequency
a high energy and a high frequency
a low energy and a low frequency
a low energy and a high frequency
The diagram shows the electromagnetic spectrum.
Based on the diagram, a wave with a short wavelength would have relatively
a high energy and a low frequency
a high energy and a high frequency
a low energy and a low frequency
a low energy and a high frequency
What is the atomic number of Lithium?
3
4
6.941
7
Atoms of elements in a group on the Periodic Table have similar chemical properties. This similarity occurs because of the atom's
atomic mass
atomic orbitals
principle energy levels
valence electrons
Which rule is being broken, if any, in the following image?
Aufbau Principle
Hunds Rule
Pauli Exclusion Principle
No rule is being broken
Which rule is being broken, if any, in the following image?
Aufbau Principle
Hunds Rule
Pauli Exclusion Principle
No rule is being broken
Which rule is being broken, if any, in the following image?
Aufbau Principle
Hunds Rule
Pauli Exclusion Principle
No rule is being broken
Why does a neutral atom of selenium have a smaller atomic radius than a neutral atom of gallium?
The atomic radius decreases going left to right as the effective nuclear charge pulls electrons closer to the nucleus and increases going top to bottom as more shells are added.
The atomic radius increases going left to right as the effective nuclear charge pulls electrons closer to the nucleus and increases going top to bottom as more shells are added.
The atomic radius decreases going left to right as the effective nuclear charge pulls electrons closer to the nucleus and decreases going top to bottom as more shells are added.
The atomic radius increases going left to right as the effective nuclear charge pulls electrons closer to the nucleus and decreases going top to bottom as more shells are added.
