atoms lose, gain, or share valence electrons to have 8 valence electrons.
The octet rule indicates that
metals, cations
In ionic compounds ________ lose their valence electrons to form positively charged ________.
lose 3
How many electrons will aluminum gain or lose when it forms an ion?
K+
What is the symbol for the ion with 19 protons and 18 electrons?
loses one electron.
To form an ion a sodium atom
has a negative charge.
An anion always
3+
What is the ionic charge of an ion with 18 protons and 15 electrons?
22.
The number of electrons in an ion with 20 protons and an ionic charge of 2- is
2+.
Elements in group 2A(2) of the periodic table form ions with a charge of
Al3+
The ion of aluminum is
gain 1
How many electrons will chlorine gain or lose when it forms an ion?
zero.
An ionic compound has a net charge of
Al2O3
The correct formula for a compound formed from the elements Al and O is
MgS.
The correct formula for the compound formed from Mg and S is
FeCl3
Which one of the following compounds contains an ion with a 3+ charge?
O2-
What is the correct formula for the oxide ion?
magnesium chloride.
The compound is named
Fe
Which one of the following elements forms two or more ions with different ionic charges?
Fe2+
What is the correct formula for the iron (II) ion?
copper (I).
The name of the ion is
Fe2S3
What is the correct formula for iron (III) sulfide?
molecule
A(n) ________ is the smallest neutral unit of two or more atoms held together by a covalent bond.
atoms are held together by sharing electrons.
In a molecule with covalent bonding
carbon
Which of the following elements does NOT exist as a diatomic molecule?
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
single covalent bonds do not give all of the atoms in the molecule eight valence electrons.
Double and triple bonds form because
nitrogen trichloride.
The correct name of the compound is
covalent compounds.
According to naming rules the types of compound that use prefixes in their names are
dinitrogen trioxide.
The correct name for the compound is
CI4
What is the formula of carbon tetraiodide?
aluminum sulfate.
The name of Al2(SO4)3 is?
electronegativity.
The ability of an atom to attract the shared electrons in a covalent bond is its
N2
Which of the following substances contains a nonpolar covalent bond?
HCl
Which of the following compounds contains a polar covalent bond?
CaO
Which of the following compounds contains an ionic bond?
KF
Ionic bonding is expected in which of these compounds?
H2O
A polar covalent bond is found in which of these compounds?
nonpolar covalent bond.
The bond in Cl2 is a(n)
polyatomic ion.
A group of covalently bonded atoms that has an overall electrical charge is called a(n)
ammonium
Which of the following polyatomic ions has a positive charge?
phosphate
Which of the following polyatomic ions has a 3- ionic charge?
N3-
What is the formula of the nitride ion?
hydrogen sulfate.
The name of the ion is
Na3PO4
What is the formula of a compound that contains Na+ and PO43- ions?
iron (III) sulfate.
Fe2 (SO4)3 is called
Al(NO3)3
What is the formula for aluminum nitrate?
shape of a molecule.
The VSEPR theory allows us to determine the
electrons are lost and the ion is smaller
When a cation is formed from a representative element
pyramidal.
The shape of the ammonia molecule (NH3) is
bent
The shape of the water molecule (H2O) is
hydrogen bonds.
The main type of interaction between molecules of ammonia (NH3) are
dispersion forces.
The main type of interaction between molecules of hydrogen (H2) are
tetrahedron.
The carbon tetrachloride molecule has the shape of a
a nonpolar molecule with polar bonds.
The carbon tetrachloride molecule is
a polar molecule with polar bonds.
The ammonia molecule (NH3) is
covalent
Is carbon tetrachloride covalent or ionic?
ionic
Is potassium oxide covalent or ionic?
covalent
Is carbon dioxide covalent or ionic?
covalent
Is dihydrogen sulfide covalent or ionic?
ionic
Is sodium fluoride covalent or ionic?
covalent
Is nitrogen trichloride covalent or ionic?
