7251875
Descripción
Test por Brian O'Neill, actualizado hace más de 1 año
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Creado por Brian O'Neill
hace casi 8 años
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Pregunta 1
Pregunta
An ionic bond is best described as
Respuesta
-
the sharing of electrons
-
the transfer of electrons from one atom to another
-
the attraction that holds the atoms together in a polyatomic ion
-
the attraction between 2 nonmetal atoms
-
the attraction between 2 metal atoms
Pregunta 2
Pregunta
A covalent bond is best described as
Respuesta
-
the sharing of electrons between atoms.
-
the transfer of electrons
-
a bond between a metal and a nonmetal
-
a bond between a metal and a polyatomic ion
-
a bond between two polyatomic ion
Pregunta 3
Pregunta
Write the name for Sn(SO4)2. Remember that Sn forms several ions
Respuesta
-
tin (I) sulfite
-
tin (IV) sulfate
-
tin sulfide
-
tin (II) sulfite
-
tin (I) sulfate
Pregunta 4
Pregunta
Give a possible molecular formula for C3H5ClO.
Respuesta
-
C6H10ClO2
-
C5H10Cl2O2
-
C6H10Cl2O2
-
C6H10O2
-
C6H12Cl2O2
Pregunta 5
Pregunta
Determine the name for TiCO3. Remember that titanium forms several ions
Respuesta
-
titanium (II) carbonate
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titanium carbide
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titanium carbonite
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titanium (II) carbonite
-
titanium (I) carbonate
Pregunta 6
Pregunta
Give the correct formula for aluminum sulfate.
Respuesta
-
Al2SO4
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Al(SO4)3
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Al3(SO4)2
-
Al2(SO4)3
Pregunta 7
Pregunta
Calculate the molar mass of Ca3(PO4)2
Respuesta
-
87.05 g/mol
-
215.21 g/mol
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310.18 g/mol
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279.21 g/mol
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246.18 g/mol
Pregunta 8
Pregunta
How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? The molar mass of Al2(CO3)3 is 233.99 g/mol.
Respuesta
-
1.23 × 1023 O atoms
-
2.96 × 1024 O atoms
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2.87 × 1025 O atoms
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1.10 × 1024 O atoms
-
3.68 × 1023 O atoms
Pregunta 9
Pregunta
Calculate the mass percent composition of lithium in Li3PO4
Respuesta
-
26.75 %
-
17.98 %
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30.72 %
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55.27 %
-
20.82 %
Pregunta 10
Pregunta
Determine the molecular formula of a compound that has a molar mass of 183.2 g/mol and an empirical formula of C2H5O2.
Respuesta
-
C2H5O2
-
C6H15O6
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C3H7O3
-
C4H10O4
-
C8H20O8
Pregunta 11
Pregunta
Determine the empirical formula for a compound that contains C, H and O. It contains 52.14% C and 34.73% O by mass.
Respuesta
-
C2H6O
-
CHO
-
C4H13O2
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CH4O3
-
CH3O
Pregunta 12
Pregunta
Draw the Lewis structure for S2⁻
Respuesta
- True
- False
Pregunta 13
Pregunta
Draw the Lewis structure for Ca2+
Respuesta
- True
- False
Pregunta 14
Pregunta
Draw the Lewis structure for N
Respuesta
- True
- False
Pregunta 15
Pregunta
Give the complete electronic configuration for Br-.
Respuesta
-
1s22s22p63s23p64s24p6
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1s22s22p63s23p64s24d104p6
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1s22s22p63s23p64s23d104p6
-
1s22s22p63s23p64s23d104p5
-
1s22s2p63s2p64s23d104p6
Pregunta 16
Pregunta
Place the following in order of decreasing magnitude of lattice energy.
K2O Rb2S Li2O
Respuesta
-
Li2O > K2O > Rb2S
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Li2O > Rb2S > K2O
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Rb2S > K2O > Li2O
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Rb2S > Li2O > K2O
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K2O > Li2O > Rb2S
Pregunta 17
Pregunta
Use Lewis theory to determine the chemical formula for the compound formed between Rb and O
Respuesta
-
RbO
-
RbO2
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Rb2O
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Rb2O3
-
Rb3O2
Pregunta 18
Pregunta
What type of bonding is found in the compound HCl?
Respuesta
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covalent bonding
-
hydrogen bonding
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ionic bonding
-
metallic bonding
Pregunta 19
Pregunta
Which of the following is an ionic compound?
Respuesta
-
SBr2
-
Mg3(PO4)2
-
Cl2O
-
CH2O
-
PBr5
Pregunta 20
Pregunta
Give the name for PCl3
Respuesta
-
phosphorus trichloride
-
potassium trichloride
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phosphorus (III) chloride
-
phosphorus (II) chloride
-
phosphorus chloride
Pregunta 21
Pregunta
A single covalent bond
Respuesta
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0 electron pairs
-
1 electron pairs
-
2 electron pairs
-
3 electron pairs
-
is the shortest
-
4 electron pairs
-
is the strongest
-
is the weakest
-
does not exist
-
is the longest
Pregunta 22
Pregunta
A double covalent bond
Respuesta
-
0 electron pairs
-
1 electron pairs
-
2 electron pairs
-
3 electron pairs
-
is the shortest
-
does not exist
-
is the longest
Pregunta 23
Pregunta
A triple covalent bond
Respuesta
-
0 electron pairs
-
1 electron pairs
-
2 electron pairs
-
3 electron pairs
-
is the shortest
-
4 electron pairs
-
is the strongest
-
is the weakest
-
does not exist
-
is the longest
Pregunta 24
Pregunta
A quadruple covalent bond exists
Respuesta
- True
- False
Pregunta 25
Pregunta
Identify the compound with the largest dipole moment in the gas phase
Respuesta
-
LiF
-
HF
-
ClF
-
Cl2
Pregunta 26
Pregunta
Identify the compound with the smallest dipole moment in the gas phase
Respuesta
-
Cl2
-
ClF
-
HF
-
LiF
Pregunta 27
Pregunta
Draw the best Lewis structure for BeF2. State the EG, the MG, and the hybridization for your answer.
Respuesta
- True
- False
Pregunta 28
Pregunta
Using periodic trends, place the following bonds in order of increasing ionic character.
Si-P Si-Cl Si-S
Respuesta
-
Si-P < Si-Cl < Si-S
-
Si-P < Si-S < Si-Cl
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Si-S < Si-Cl < Si-P
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Si-Cl < Si-P < Si-S
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Si-Cl < Si-S < Si-P
Pregunta 29
Pregunta
Give the number of valence electrons for ICl5.
Respuesta
-
36
-
40
-
42
-
44
-
46
Pregunta 30
Pregunta
Draw the best Lewis structure for XeI2. State the EG, the MG, and the hybridization for your answer.
Respuesta
- True
- False
Pregunta 31
Pregunta
Draw the best Lewis structure for SF4. State the EG, the MG, and the hybridization for your answer.
Respuesta
- True
- False
Pregunta 32
Pregunta
Draw the best Lewis structure for NO3⁻. State the EG, the MG, and the hybridization for your answer
Respuesta
- True
- False
Pregunta 33
Pregunta
Which of the following resonance structures for OCN⁻ will contribute most to the correct structure of OCN⁻? (LP=lone pair)
Respuesta
-
O(2 LP’s) C N (2 LP’s)
-
O(1 LP) C-N(3 LP’s)
-
O(1 LP) C(2 LP’s) N(1 LP)
-
O(3 LP’s)—C N(with 1 LP)
-
They all contribute equally to the correct structure of OCN⁻
Pregunta 34
Pregunta
Place the following in order of increasing F-A-F bond angle, where A represents the central atom in each molecule.
Respuesta
-
PF3 < OF2 < PF4⁺
-
OF2 < PF4⁺ < PF3
-
PF4⁺ < OF2 < PF3
-
PF4⁺ < PF3 < OF2
-
OF2 < PF3 < PF4⁺
Pregunta 35
Pregunta
How many of the following molecules are polar?
PCl5 COS XeO3 SeBr2
Respuesta
-
2
-
1
-
0
-
4
-
3
Pregunta 36
Pregunta
Give the hybridization for the O in OF2. State the EG and the MG for your answer
Respuesta
- True
- False
Pregunta 37
Pregunta
Give the hybridization for the Br in BrF5. State the EG and the MG for your answer
Respuesta
- True
- False
Pregunta 38
Pregunta
A single covalent bond has [blank_start]1[blank_end] sigma and [blank_start]0[blank_end] pi bonds
Respuesta
-
1
-
0
Pregunta 39
Pregunta
A Double covalent bond has [blank_start]1[blank_end] sigma and [blank_start]2[blank_end] pi bonds
Respuesta
-
1
-
1
Pregunta 40
Pregunta
A triple covalent bond has [blank_start]1[blank_end] sigma and [blank_start]2[blank_end] pi bonds
Respuesta
-
1
-
2
Pregunta 41
Pregunta
Describe a pi bond
Respuesta
-
side by side overlap of parallel p orbitals
-
s orbital overlapping with the end of a d orbital
-
end to end overlap of p orbitals
-
overlap of two d orbitals
-
p orbital overlapiing with an f orbital
Pregunta 42
Pregunta
describe a sigma bond
Respuesta
-
end to end overlap of p orbitals
-
s orbital overlapping with the side of a p orbital
-
overlap of two d orbitals
-
p orbital overlapping with an f orbital
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