Valence Electrons and Ion Types

Dr. B explains how to draw the Lewis structure for the cyanide ion (CN-). The video covers identifying the ion's charge, counting valence electrons, and drawing the initial Lewis structure. Adjustments are made to satisfy the octet rule, and the structural formula representation is discussed. The tutorial provides a step-by-step guide to understanding the bonding and electron sharing in the cyanide ion.

What type of ion is the cyanide ion?

• Cation

• Anion

• Radical

• Neutral

How many valence electrons does nitrogen have?

• 3

• 6

• 4

• 5

What is the total number of valence electrons available for the cyanide ion?

• 11

• 9

• 8

• 10

What is the first step in drawing the Lewis structure for the cyanide ion?

• Checking for octets

• Forming a bond between carbon and nitrogen

• Placing electrons around nitrogen

• Adding extra electrons to carbon

How many valence electrons does carbon have after the initial bond formation?

• 2

• 4

• 8

• 6

What adjustment is made to satisfy the octet rule for carbon?

• Moving electrons to form a triple bond

• Adding a lone pair to carbon

• Removing electrons from carbon

• Adding more electrons to nitrogen

How is the structural formula of the cyanide ion represented?

• With a single line

• With two lines

• With four lines

• With three lines