NH4+ Ion and Valence Electrons

The video tutorial explains how to draw the Lewis Structure for the ammonium ion (NH4+). It begins by identifying NH4+ as an ion due to its charge and proceeds to calculate the total number of valence electrons, considering the loss of an electron due to the positive charge. The tutorial then guides viewers through placing the least electronegative element, nitrogen, at the center and arranging hydrogen atoms around it. It explains forming covalent bonds and ensuring the octet rule is satisfied. The video concludes by placing brackets around the structure to indicate its ionic nature and discusses the tetrahedral molecular geometry of NH4+.

What is the charge of the Ammonium ion?

• Variable

• Neutral

• Negative

• Positive

How many valence electrons does nitrogen have?

• 5

• 3

• 9

• 7

What is the total number of valence electrons in NH4+?

• 8

• 7

• 6

• 9

Which element is placed at the center of the NH4+ Lewis Structure?

• Oxygen

• Hydrogen

• Carbon

• Nitrogen

How many covalent bonds are formed in the NH4+ Lewis Structure?

• 5

• 4

• 3

• 2

Why is it acceptable for hydrogen to have only two valence electrons?

• It has a high electronegativity.

• It only needs two for a full energy level.

• It shares electrons with nitrogen.

• It is an exception to the octet rule.

What shape does the NH4+ ion exhibit?

• Tetrahedral

• Linear

• Bent

• Trigonal Planar

What should be added around the NH4+ Lewis Structure to indicate it is an ion?

• Curly braces

• Parentheses

• Brackets

• Quotation marks