The water molecule has an angular structure. It is easy to see why water takes this structure and not a linear one. The Lewis structure of the water molecule gives information about the molecular geometry (the shape of the molecule). p>
Read each of the following questions, select the answers that you think are correct. To do this you must press buttons and links (in blue). p>
1. How many valence electrons (those from the upper level) has the water molecule?
Wrong.
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Wrong.
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Correct. O: 6; H: 1. Total
8 electrons
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2. How many links can be created using the unpaired electrons?
Wrong. Oxygen has two unpaired electrons and can create two bonds.
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Correct. Oxygen has two unpaired electrons and can form
two bonds
to complete the octet.
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3. Can you suggest the geometry of the molecule?Structures
Wrong. This molecule is of type AE2X2 and can not be linear.
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Correct This molecule is of the type AE2X2.
The two unshared electron pairs on oxygen require additional space and force the OH bonds to adopt the
angular geometry
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4. Are there polar bonds in this molecule? Electronegativities y Polarity
Wrong. Notes electronegativity values. H-O bonds are polar.
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Correct Oxygen is more electronegative than hydrogen and H-O bonds are polar
Dipoles
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8. What orbitals uses the central atom?Orbitals
Wrong. "sp" hybridization involves only two positions around
the central atom.
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Wrong. "sp2" hybridization involves only three positions around
the central atom.
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Correct The four sp3 orbitals
are hosting two unshared electron pairs and the two bonding pairs (shared).
sp3 orbitals
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