Multiple Choice
Which molecular geometry is predicted by the VSEPR model for the neutral compound CCl_4?
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11. Bonding & Molecular Structure
Lewis Dot Structures: Neutral Compounds
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Which of the following best represents the Lewis dot structure for a neutral arsenic (As) atom, a group 5A element?
A
As with five dots arranged as two pairs and one single dot around the symbol
B
As with three dots arranged as a single pair and one single dot
C
As with eight dots arranged as four pairs around the symbol
D
As with two dots placed together as a single pair
Verified step by step guidance1
Identify the group number of arsenic (As) in the periodic table. Arsenic is in group 5A (or group 15), which means it has 5 valence electrons.
Recall that the Lewis dot structure represents the valence electrons of an atom as dots placed around the element's symbol.
Since arsenic has 5 valence electrons, you need to place 5 dots around the symbol 'As'. The dots are arranged to show electron pairs and unpaired electrons.
Arrange the 5 dots as two pairs (each pair representing two electrons) and one single dot (an unpaired electron) around the symbol. This reflects the typical way to represent 5 valence electrons in Lewis structures.
Verify that the total number of dots equals the number of valence electrons (5) and that the structure corresponds to a neutral atom, with no charges indicated.
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