Lewis Diagrams - AP Chemistry
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Identify the Lewis Diagram for boron trifluoride ($BF_3$).
Identify the Lewis Diagram for boron trifluoride ($BF_3$).
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F-B-F with one additional F atom bonded to B. Trigonal planar with boron having incomplete octet.
F-B-F with one additional F atom bonded to B. Trigonal planar with boron having incomplete octet.
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What is the Lewis Diagram for ethylene ($C_2H_4$)?
What is the Lewis Diagram for ethylene ($C_2H_4$)?
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H-C=C-H with additional H atoms bonded to each C. Planar molecule with carbon-carbon double bond.
H-C=C-H with additional H atoms bonded to each C. Planar molecule with carbon-carbon double bond.
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How many lone pairs are on the oxygen in water's Lewis Diagram?
How many lone pairs are on the oxygen in water's Lewis Diagram?
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Two lone pairs. Oxygen has 6 valence electrons, forms 2 bonds, leaves 4 as lone pairs.
Two lone pairs. Oxygen has 6 valence electrons, forms 2 bonds, leaves 4 as lone pairs.
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What symbol is used for a lone pair of electrons in Lewis Diagrams?
What symbol is used for a lone pair of electrons in Lewis Diagrams?
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Dots around the atom. Two dots represent an unshared electron pair.
Dots around the atom. Two dots represent an unshared electron pair.
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What is the Lewis Diagram for carbon dioxide ($CO_2$)?
What is the Lewis Diagram for carbon dioxide ($CO_2$)?
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O=C=O. Linear molecule with carbon forming two double bonds.
O=C=O. Linear molecule with carbon forming two double bonds.
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State the Lewis Diagram for acetylene ($C_2H_2$).
State the Lewis Diagram for acetylene ($C_2H_2$).
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H-C≡C-H. Linear molecule with carbon-carbon triple bond.
H-C≡C-H. Linear molecule with carbon-carbon triple bond.
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Identify the Lewis Diagram for sulfur dioxide ($SO_2$).
Identify the Lewis Diagram for sulfur dioxide ($SO_2$).
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O=S-O with one lone pair on S and two on each O. Bent structure due to lone pair repulsion on sulfur.
O=S-O with one lone pair on S and two on each O. Bent structure due to lone pair repulsion on sulfur.
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What is the Lewis Diagram for formaldehyde ($CH_2O$)?
What is the Lewis Diagram for formaldehyde ($CH_2O$)?
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H-C=O with an additional H on C and two lone pairs on O. Planar molecule with carbon-oxygen double bond.
H-C=O with an additional H on C and two lone pairs on O. Planar molecule with carbon-oxygen double bond.
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How many covalent bonds does nitrogen typically form?
How many covalent bonds does nitrogen typically form?
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Three covalent bonds. Uses three of its five valence electrons for bonding.
Three covalent bonds. Uses three of its five valence electrons for bonding.
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How do you represent a shared electron pair in a Lewis Diagram?
How do you represent a shared electron pair in a Lewis Diagram?
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With a line between the two atoms. Line notation represents covalent bonding electrons.
With a line between the two atoms. Line notation represents covalent bonding electrons.
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What is the purpose of a Lewis Diagram?
What is the purpose of a Lewis Diagram?
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To show the bonding between atoms and lone pairs of electrons. Visualizes electron distribution and chemical bonding patterns.
To show the bonding between atoms and lone pairs of electrons. Visualizes electron distribution and chemical bonding patterns.
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Which element can exceed the octet rule in Lewis Diagrams?
Which element can exceed the octet rule in Lewis Diagrams?
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Phosphorus. Third period elements can use d orbitals for bonding.
Phosphorus. Third period elements can use d orbitals for bonding.
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How are double bonds represented in Lewis Diagrams?
How are double bonds represented in Lewis Diagrams?
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With two parallel lines between the bonded atoms. Two parallel lines indicate four shared electrons.
With two parallel lines between the bonded atoms. Two parallel lines indicate four shared electrons.
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What is the significance of the octet rule in Lewis Diagrams?
What is the significance of the octet rule in Lewis Diagrams?
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Atoms tend to have eight electrons in their valence shell. Stable electron configuration for most main group elements.
Atoms tend to have eight electrons in their valence shell. Stable electron configuration for most main group elements.
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Which element is represented by the symbol 'Cl' in a Lewis Diagram?
Which element is represented by the symbol 'Cl' in a Lewis Diagram?
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Chlorine. Cl is the chemical symbol for this halogen element.
Chlorine. Cl is the chemical symbol for this halogen element.
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What does a triple bond indicate in a Lewis Diagram?
What does a triple bond indicate in a Lewis Diagram?
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Three pairs of shared electrons. Triple bonds involve six electrons in three pairs.
Three pairs of shared electrons. Triple bonds involve six electrons in three pairs.
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What is the Lewis Diagram for nitric oxide ($NO$)?
What is the Lewis Diagram for nitric oxide ($NO$)?
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N=O with one lone pair on N and two on O. Radical molecule with unpaired electron on nitrogen.
N=O with one lone pair on N and two on O. Radical molecule with unpaired electron on nitrogen.
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Identify the Lewis Diagram for ozone ($O_3$).
Identify the Lewis Diagram for ozone ($O_3$).
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O=O-O with one lone pair on the central O and two on the others. Bent molecule showing resonance between oxygen atoms.
O=O-O with one lone pair on the central O and two on the others. Bent molecule showing resonance between oxygen atoms.
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What is the Lewis Diagram for phosphine ($PH_3$)?
What is the Lewis Diagram for phosphine ($PH_3$)?
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H-P-H with one lone pair on P and an additional H. Trigonal pyramidal shape with phosphorus as central atom.
H-P-H with one lone pair on P and an additional H. Trigonal pyramidal shape with phosphorus as central atom.
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What does each line in a Lewis Diagram represent?
What does each line in a Lewis Diagram represent?
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A pair of shared electrons. Each line shows a covalent bond of two electrons.
A pair of shared electrons. Each line shows a covalent bond of two electrons.
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How are expanded octets represented in Lewis Diagrams?
How are expanded octets represented in Lewis Diagrams?
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With more than eight electrons around the central atom. Shows atoms with more than 8 valence electrons.
With more than eight electrons around the central atom. Shows atoms with more than 8 valence electrons.
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How many lone pairs are on the nitrogen in ammonia's Lewis Diagram?
How many lone pairs are on the nitrogen in ammonia's Lewis Diagram?
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One lone pair. Nitrogen uses three electrons for bonds, two remain as lone pair.
One lone pair. Nitrogen uses three electrons for bonds, two remain as lone pair.
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How many bonds are typically formed by oxygen in Lewis Diagrams?
How many bonds are typically formed by oxygen in Lewis Diagrams?
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Two bonds. Oxygen typically forms two covalent bonds to complete octet.
Two bonds. Oxygen typically forms two covalent bonds to complete octet.
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What is the typical valence electron count for nitrogen in Lewis Diagrams?
What is the typical valence electron count for nitrogen in Lewis Diagrams?
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Five. Nitrogen is in group 15 of the periodic table.
Five. Nitrogen is in group 15 of the periodic table.
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How do you represent a single bond in a Lewis Diagram?
How do you represent a single bond in a Lewis Diagram?
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With a single line between two atoms. One line equals one electron pair shared between atoms.
With a single line between two atoms. One line equals one electron pair shared between atoms.
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What is the Lewis Diagram for sulfur hexafluoride ($SF_6$)?
What is the Lewis Diagram for sulfur hexafluoride ($SF_6$)?
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F-S-F with four additional F atoms bonded to S. Octahedral structure utilizing sulfur's expanded octet.
F-S-F with four additional F atoms bonded to S. Octahedral structure utilizing sulfur's expanded octet.
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State the Lewis Diagram for hydrogen chloride ($HCl$).
State the Lewis Diagram for hydrogen chloride ($HCl$).
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H-Cl with three lone pairs on Cl. Polar molecule with chlorine having three lone pairs.
H-Cl with three lone pairs on Cl. Polar molecule with chlorine having three lone pairs.
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How do you denote resonance in Lewis Diagrams?
How do you denote resonance in Lewis Diagrams?
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By using double-headed arrows between structures. Shows electron delocalization across multiple structures.
By using double-headed arrows between structures. Shows electron delocalization across multiple structures.
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Find the error in this Lewis Diagram for water: H-O-H
Find the error in this Lewis Diagram for water: H-O-H
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Missing two lone pairs on the oxygen. Oxygen needs two lone pairs to complete its octet.
Missing two lone pairs on the oxygen. Oxygen needs two lone pairs to complete its octet.
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State the Lewis Diagram for methane ($CH_4$).
State the Lewis Diagram for methane ($CH_4$).
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H-C-H with two additional H atoms bonded to C. Tetrahedral structure with carbon bonded to four hydrogens.
H-C-H with two additional H atoms bonded to C. Tetrahedral structure with carbon bonded to four hydrogens.
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