Formal Charges and Lewis Structures

Formal Charges and Lewis Structures

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Mia Campbell

FREE Resource

The video tutorial explains how to calculate formal charges for elements in the perchlorate ion (ClO4-). It uses Lewis structures and a specific formula to determine the formal charges of oxygen atoms with single and double bonds, as well as the chlorine atom in the center. The tutorial emphasizes the importance of achieving formal charges close to zero or matching the ion's charge. It concludes by highlighting that different Lewis structures can yield different formal charges, but the goal is to minimize non-zero charges.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of using a Lewis structure when determining formal charges?

To find the formal charges of atoms

To visualize the molecular geometry

To calculate the molecular weight

To determine the number of valence electrons

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many unbonded valence electrons does the oxygen with a single bond have in the perchlorate ion?

4

8

6

2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formal charge of the oxygen atom with a single bond in the perchlorate ion?

0

-2

+1

-1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many bonded valence electrons are considered for the oxygen with a double bond in the perchlorate ion?

8

6

4

2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formal charge of the oxygen atom with a double bond in the perchlorate ion?

+1

0

-1

-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which group of the periodic table is chlorine found?

Group 17

Group 18

Group 15

Group 16

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formal charge of the chlorine atom in the perchlorate ion?

+1

0

-1

-2

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