Molecular Compounds
Covalent Bonding
Polar Bonds
Potpourri
100
What type of molecule consists of 2 atoms?
diatomic molecule
100
What type of bond occurs when atoms share electrons?
covalent bond
100
What type of bond occurs when there is an equal pull on the electrons in a covalent bond?
nonpolar covalent bond
100
A ______________ molecule has a slightly negative end and a slightly positive end.
polar
200
Which of the following diatomic molecules is joined by a double covalent bond? A. He2 b. O2 c. N2 d. Cl2
O2
200
Which noble gas has the same electron configuration as the oxygen in a water molecule?
neon
200
Which type of solid has the highest melting point? a. nonmetallic solid c. ionic solid b. network solid d. metal
network solid
200
Which of the forces of molecular attraction is the weakest?
dispersion forces
300
What is the total number of covalent bonds normally associated with a single Nitrogen atom in a compound?
3
300
How many electrons are shared in a double covalent bond?
4
300
What type of intermolecular attraction occurs when polar molecules are attracted to one another?
Dipole Interaction
300
Why is Hydrogen a diatomic molecule in nature?
Hydrogen achieves a noble gas electron configuration by sharing an electron with another Hydrogen
400
How many unshared pairs of electrons are in a molecule of O2
4
400
How many covalent bonds are in a covalently bonded molecule containing 2 hydrogen and 2 oxygen atoms?
3
400
What type of bond exists between H and Br? Be specific
moderately polar covalent
400
What is required in order to melt a network solid?
covalent bonds must be broken
500
Explain the octet rule in covalent bonding
Atoms will share electrons to achieve a noble gas configuration.
500
What information does a molecule’s formula structure give?
The arrangement of atoms in a molecule
500
Is CH4 a polar molecule? Explain
No, because the atoms are oriented so that the bond polarities cancel each other.
500
What determines the degree of polarity in a bond?
The relative electronegativity of the two bonded atoms determines the polarity of a bond.
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