5)electrons are lost and the ion is smaller
When a cation is formed from a representative element
1)electrons are gained and the ion is larger.
2)electrons are lost and the ion is larger.
3)electrons are gained and the ion is smaller.
4)the cation acquires a negative charge.
5)electrons are lost and the ion is smaller
trigonal planar.
The shape of the boron trifluoride molecule (BF3) is
tetrahedral.
bent
trigonal pyramidal.
linear.
trigonal planar.
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dimagnesium chloride.
The compound MgCl2 is named
magnesium chlorine.
magnesium chloride.
magnesium (II) chloride.
magnesium dichloride.
dimagnesium chloride
KF
Ionic bonding is expected in which of these compounds?
H2
HF
Cl2
OF2
KF
H2O
A polar covalent bond is found in which of these compounds?
H2
F2
NaCl
N2
H2O
HCl
Which of the following compounds contains a polar covalent bond?
NaF
Br2
HCl
O2
MgO
hydrogen sulfate
The name of the HSO4- ion is
sulfite.
hydrogen sulfite.
hydrogen sulfate.
sulfide.
sulfate
dispersion forces.
The main type of interaction between molecules of carbon tetrabromide (CBr4) are
dipole-dipole attractions.
hydrogen bonds.
ionic bonds.
dispersion forces.
polar covalent
molecule
A(n) ________ is the smallest neutral unit of two or more atoms held together by a covalent bond.
unit
ionic compound
nucleus
molecule
formula
dispersion forces.
The main type of interaction between molecules of hydrogen (H2) are
polar covalent.
hydrogen bonds.
dipole-dipole attractions.
dispersion forces.
ionic bonds.
lose 3
How many electrons will aluminum gain or lose when it forms an ion?
gain 5
gain 1
lose 1
lose 3
lose 2
covalent compounds
According to naming rules, the types of compound that use prefixes in their names are
ionic compounds.
compounds that contain polyatomic ions.
covalent compounds.
polyatomic ions.
ionic compounds involving transition metals
a polar molecule with polar bonds.
The ammonia molecule (NH3) is
a polar molecule with nonpolar bonds.
a nonpolar molecule with polar bonds.
a nonpolar molecule with nonpolar bonds.
a polar molecule with polar bonds.
a polar molecule with ionic bonds.
MgS
The correct formula for the compound formed from Mg and S is
MgS.
Mg2S2.
Mg2S3.
MgS2.
Mg2S.
shape of a molecule.
The VSEPR theory allows us to determine the
bond type for a molecule.
charge on an ion.
formula for a compound.
color of a compound.
shape of a molecule.
Fe2+
What is the correct formula for the iron (II) ion?
Fe2-
Fe3+
Fe2+
Fe3-
Fe+
a nonpolar molecule with polar bonds.
The carbon tetrachloride molecule, CCl4, is
a nonpolar molecule with polar bonds.
a polar molecule with ionic bonds.
a polar molecule with nonpolar bonds.
a polar molecule with polar bonds.
a nonpolar molecule with nonpolar bonds.
nitrogen trichloride.
The correct name of the compound NCl3 is
nitrogen chloride.
nitrogen(III) chloride.
nitrogen trichloride.
nickel chloride.
trinitrogen chloride
Al(NO3)3
What is the formula for aluminum nitrate?
Al2NO2
Al(NO2)3
AlNO3
Al2(NO2)2
Al(NO3)3
Na3PO4
What is the formula of a compound that contains Na+ and PO43- ions?
Na2PO3
Na3P
Na3PO3
Na3PO4
NaPO4
needed to give it a noble gas arrangement.
In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to the number of electrons
in its nucleus.
in the atom.
needed to give it a noble gas arrangement.
in all the atoms.
in its ion.
ammonium
Which of the following polyatomic ions has a positive charge?
cyanide
hydroxide
nitrate
hydrogen carbonate
ammonium
metals, cations
In ionic compounds, ________ lose their valence electrons to form positively charged ________.
nonmetals, anions
metals, polyatomic ions
metals, anions
nonmetals, cations
metals, cations
N3-
What is the formula of the nitride ion?
N3-
NO2-
NO32-
NO33-
NO3
FeCl3
Which one of the following compounds contains an ion with a 3+ charge?
KCl
Na2O
FeCl3
MgCl2
CuCl
hydrogen bonds.
The main type of interaction between molecules of ammonia (NH3) are
dipole-dipole attractions.
ionic bonds.
polar covalent.
hydrogen bonds.
dispersion forces.
Fe
Which one of the following elements forms two or more ions with different ionic charges?
Fe
K
F
O
Ca
22
The number of electrons in an ion with 20 protons and an ionic charge of 2- is
22.
16.
18.
20.
24.
O2-
What is the correct formula for the oxide ion?
O2+
O+
O2-
O3+
O
aluminum sulfate.
The name of Al2(SO4)3 is
dialuminum trisulfide.
aluminum(III) sulfate.
aluminum sulfate.
dialuminum trisulfate.
dialuminum sulfate.
atoms lose, gain, or share valence electrons to have 8 valence electrons.
The octet rule indicates that
atoms lose, gain, or share valence electrons to have 8 valence electrons.
the noble gases react with other compounds to get 8 valence electrons.
all of the Group A elements have 8 valence electrons.
all of the shells in an atom hold a maximum of 8 electrons.
all of the noble gases have eight total electrons.
bent
The shape of the water molecule (H2O) is
bent
linear.
tetrahedral.
octagonal.
trigonal pyramidal.
Cl4
What is the formula of carbon tetraiodide?
C2I4
CI
C4I
CI3
CI4
