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WorksheetsChemical Bonding-Part I
Total questions: 20
Worksheet time: 10mins
Which of the following groups contain three elements with stable electron configurations?
lithium, krypton, argon
argon, neon, barium
xenon, neon, boron
helium, xenon, neon
Typically, atoms gain or lose electrons to achieve
an exchange of energy.
ionization.
a stable electron configuration
vaporization
In an electron dot diagram, the symbol for an element is used to represent
the nucleus
the nucleus and all electrons.
the nucleus and valence electrons.
the nucleus and all non-valence electrons.
Study the electron dot diagrams for lithium, carbon, fluorine, and neon in this figure. Choose the statement that correctly identifies the most stable of the elements
Lithium is the most stable element because it has to lose only one electron to achieve a stable configuration.
Carbon is the most stable element because it can form four bonds.
Fluorine is the most stable element because it has to gain only one electron to achieve a stable configuration.
Neon is the most stable element because its highest occupied energy level is filled
Ionization energies tend to
decrease from left to right across a
period.
increase from the top of a group to the
bottom.
increase from left to right across a period.
decrease from the bottom of a group to the top.
The formation of an ionic bond involves the
transfer of electrons.
transfer of neutrons.
transfer of protons.
sharing of electrons.
Which of the following statements correctly describes the substance with the formula KI?
Molecules of potassium iodide contain one atom of potassium and
two atoms of iodine.
There is a one-to-one ratio of potassium ions to iodide ions.
Potassium iodide is a molecular compound.
Potassium iodide is a polyatomic ion.
In the compound MgCl2, the subscript 2 indicates that
there are two magnesium ions for each ion of chlorine.
the chloride ion is twice the size of the magnesium ion.
magnesium and chlorine form a double covalent bond.
there are two chloride ions for each magnesium ion.
Which statement best describes the properties of sodium chloride?
Sodium chloride is a malleable solid.
Solid sodium chloride is a good conductor of electric current.
Sodium chloride has a low melting point.
Liquid sodium chloride is a good conductor of electric current.
Which of the following is a typical property of an ionic compound?
low melting point.
poor conductor of electric current when melted.
tendency to shatter when struck.
all of the above
Which of the following compounds does NOT contain molecules?
H2
NaCl
CO2
H2O
When two atoms of the same nonmetal react, they often form a(an)
ionic bond.
polyatomic ion.
diatomic molecule.
polar molecule.
You see a structural formula in which the symbols for elements are connected by a long dash. You can assume that the chemical bonds in the compound are
ionic
covalent
metallic
unstable
Which of the following formulas represents a compound whose molecules contain a triple bond?
N=N
O=O=O
O3
SO3
In a polar covalent bond,
electrons are shared equally between atoms.
a cation is bonded to an anion.
electrons are transferred between atoms.
electrons are not shared equally between atoms.
The elements most likely to form more than one type of ion are the
transition metals.
alkali metals.
halogens.
alkaline metals.
Fluorine, F, forms a binary ionic compound with lithium, Li. What is the name of this compound?
fluorine lithide
lithium fluoride
lithium fluorine
fluorine lithium
Which of the following statements about ions is true?
All metals form more than one type of ion.
Many transition metals can form more than one type of ion.
Halogens form more than one type of ion.
Alkali metals form more than one type of ion.
Beryllium, Be, and chlorine, Cl, form a binary ionic compound with a one-to-two ratio of beryllium ions to chloride ions. The formula for the compound is
Be2Cl
2BeCl
BeCl2
Be2Cl2
In the name carbon dioxide, the prefix of the second word indicates that a molecule of carbon dioxide contains
two carbon atoms.
two oxygen atoms.
a polyatomic ion.
an ionic bond.
