Bonding and Valence Electrons in NH3

The video tutorial explains the type of bonds in NH3, known as ammonia. It begins by identifying the elements involved, nitrogen and hydrogen, both non-metals, leading to the formation of covalent bonds. The tutorial then demonstrates how to draw the Lewis structure for NH3, highlighting the arrangement of hydrogen atoms around nitrogen. It further explains the concept of valence electrons, using the periodic table to calculate the total for NH3. The video details how these electrons form covalent bonds by sharing between atoms, and concludes with an explanation of lone pair electrons, which are not involved in bonding.

What type of elements are involved in the bonding of NH3?

• Two metals

• Two non-metals

• Metal and non-metal

• Metal and metalloid

What type of bond is formed between the elements in NH3?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

In the Lewis structure of NH3, where are the hydrogen atoms placed?

• Directly on the nitrogen

• Randomly around the nitrogen

• On the outside of the structure

• Inside the structure

How many valence electrons are present in the NH3 molecule?

• 6

• 7

• 8

• 9

What is the role of valence electrons in NH3?

• They are lost during bonding

• They form covalent bonds

• They are not involved in bonding

• They form ionic bonds

How many electrons are shared between nitrogen and hydrogen in NH3?

• 2

• 6

• 4

• 8

What are the electrons called that are not involved in bonding in NH3?

• Valence electrons

• Lone pair electrons

• Free electrons

• Bonding electrons

How many lone pair electrons are present on the nitrogen atom in NH3?

• 3

• 1

• 2

• 4

What is the total number of electrons around the nitrogen atom in NH3 after bonding?

• 6

• 7

• 8

• 9

Which of the following best describes the bond type in NH3?

• Metallic with free electrons

• Ionic with shared electrons

• Hydrogen with lone electrons

• Covalent with shared electrons