Lewis Structures and Valence Electrons

This video tutorial explains how to draw the Lewis structure for the BrF2+ ion. It begins by counting the valence electrons of bromine and fluorine, considering the positive charge of the ion. The tutorial then guides viewers through placing bromine in the center and arranging fluorine atoms on either side. It demonstrates how to distribute electron pairs to form bonds and complete the octet for each atom. Finally, the video shows how to indicate the ion's charge by placing brackets and a positive sign around the structure.

What is the first step in drawing the Lewis structure for BrF2+?

• Identify the central atom

• Draw the molecular shape

• Determine the bond angles

• Count the valence electrons

How many valence electrons does bromine contribute in BrF2+?

• 8

• 5

• 6

• 7

What is the total number of valence electrons in BrF2+?

• 22

• 20

• 24

• 18

Which atom is placed at the center of the Lewis structure for BrF2+?

• Fluorine

• Bromine

• Oxygen

• Hydrogen

How many pairs of electrons are initially placed between bromine and each fluorine?

• 1

• 2

• 4

• 3

After placing electrons around the fluorines, how many valence electrons are used?

• 14

• 12

• 18

• 16

What is the purpose of adding remaining valence electrons around the central bromine?

• To balance the charge

• To change the molecular shape

• To complete the octet

• To increase the molecular weight

What should be added to the Lewis structure to indicate it is an ion?

• A square

• A circle

• Brackets

• A triangle

What charge is indicated outside the brackets of the BrF2+ Lewis structure?

• Positive

• Negative

• Neutral

• Double positive

What is the final step in completing the Lewis structure for BrF2+?

• Changing the central atom

• Indicating the charge

• Rearranging the electrons

• Adding more atoms