Covalent Bonding: Question Preview (ID: 954)


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Under normal conditions, fluorine is a gas and bromine is a liquid. This is because
a) bromine has weaker intermolecular forces than fluorine
b) fluorine has no intermolecular forces
c) fluorine has weaker intermolecular forces than bromine
d) bromine has stronger bonds

What happens when two chlorine atoms combine to form a molecule of chlorine?
a) A bond is formed and energy is released
b) A bond is formed and energy is absorbed
c) A bond is broken and energy is released
d) A bond is broken and energy is absorbed

Which molecule is nonpolar?
a) H2O
b) NH3
c) CO
d) CO2

As a bond between hydrogen and oxygen are formed, electrons are
a) shared to form an ionic bond
b) shared to form a covalent bond
c) transferred to form an ionic bond
d) transferred to form a covalent bond

Which compound contains both ionic and covalent bonds?
a) ammonia (NH3)
b) methane (CH4)
c) sodium nitrate (NaNO3)
d) potassium chloride (KCl)

An atom of which element has the greatest attraction for electrons in a bond with hydrogen?
a) phosphorus
b) silicon
c) sulfur
d) chlorine

Which of these elements does not exist as a diatomic molecule?
a) Ne
b) F
c) H
d) I

Which of the following elements can form diatomic molecules held together by triple covalent bonds?
a) carbon
b) oxygen
c) fluorine
d) nitrogen

What is the shape of ammonia (NH3)?
a) tetrahedral
b) trigonal planar
c) trigonal pyramidal
d) bent

What are the weakest attractions between molecules
a) ionic forces
b) dispersion (Van der Waals)
c) covalent bonds
d) hydrogen bonds

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