Problem: Which of the following contains an atom that does not obey the octet rule?a. KBrb. CO2c. ClF3d. ICl

FREE Expert Solution
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FREE Expert Solution

We’re being asked to determine which molecule contains an atom that does not follow the octet rule

Recall that the octet rule states that an element is surrounded by eight electrons in the Lewis structure. 

Exceptions to this rule occur when:

• there is an odd number of electrons, like in radicals

• there are less than 8 electrons or incomplete octet

• there are more than 8 electrons or expanded octet. This occurs to nonmetals from Period 3 to 7.

For this problem, we need to draw the Lewis structure for each compound. 

To do so, we need the following steps:

Step 1: Determine the central atom in this molecule.

Step 2: Calculate the total number of valence electrons present.

Step 3: Draw the Lewis structure for the molecule.

97% (277 ratings)
Problem Details

Which of the following contains an atom that does not obey the octet rule?

a. KBr

b. CO2

c. ClF3

d. ICl

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lewis Dot Structures: Exceptions concept. You can view video lessons to learn Lewis Dot Structures: Exceptions Or if you need more Lewis Dot Structures: Exceptions practice, you can also practice Lewis Dot Structures: Exceptions practice problems .

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Based on our data, we think this problem is relevant for Professor Marin's class at UCF.