In: Chemistry
1. Is the CO molecule polar or nonpolar? If polar, which end of the molecule is delta negative (δ-) and which end of the molecule is delta positive (δ+)?
a.The molecule is polar; the O end is delta positive and the C end is delta negative.
b.The molecule is polar; the O end is delta negative and the C end is delta positive.
c.The molecule is nonpolar; both ends are delta positive.
d.The molecule is nonpolar; both ends are delta negative.
2. Draw the Lewis Structure for O2 (each atom follows the octet rule). How many electron domains are around each atom?
a.There are 4 electron domains around each atom; three pairs of nonbonding electrons on each atom and single bond between the atoms.
b.There are 3 electron domains around each atom; two pairs of nonbonding electrons on each atom and double bond between the atoms.
c.There are 2 electron domains around each atom; one pair of nonbonding electrons on each atom and triple bond between the atoms.
d.There are 3 electron domains around each atom; one pair of nonbonding electrons on each atom and triple bond between the atoms.
3. Draw the Lewis Structure for H2S (sulfur follows the octet rule). How many electron domains are around the central atom?
a.Sulfur is the central atom with 4 electron domains; two single bonds and two pair of nonbonding electrons.
b.Sulfur is the central atom with 3 electron domains; two single bonds and one pair of nonbonding electrons.
c.Sulfur is the central atom with 5 electron domains; two single bonds and three pairs of nonbonding electrons.
d.Hydrogen is the central atom with 2 electron domains; two triple bonds and zero pairs of nonbonding electrons.
1)
O is more electronegative and hence it will be partial negative
charge
Answer: b.The molecule is polar; the O end is delta negative and
the C end is delta positive.
2)
b.There are 3 electron domains around each atom; two pairs of
nonbonding electrons on each atom and double bond between the
atoms.
3)
a.Sulfur is the central atom with 4 electron domains; two single
bonds and two pair of nonbonding electrons.