Chemical Bonding and Electron Configuration

The video tutorial explains how to determine the chemical formula of a compound formed by elements with atomic numbers 8 and 13, identified as oxygen and aluminum. It covers the electronic configurations of these elements, the application of the octet rule, and the formation of ions. The tutorial demonstrates how to combine these ions to form a stable compound, resulting in the chemical formula Al2O3. The video concludes with a summary of the correct answer and its verification.

What is the main service offered in the video tutorial?

• Recorded lectures

• Live tutoring sessions

• Instant video solutions for math and science doubts

• Textbook rentals

Which elements correspond to the atomic numbers 8 and 13?

• Nitrogen and Silicon

• Oxygen and Aluminum

• Carbon and Magnesium

• Fluorine and Phosphorus

What is the electronic configuration of oxygen?

• 1s2 2s2 2p3

• 1s2 2s2 2p6

• 1s2 2s2 2p5

• 1s2 2s2 2p4

How many electrons does aluminum lose to achieve a stable configuration?

• 3

• 4

• 2

• 1

What charge does oxygen acquire when it gains electrons?

• O2+

• O2-

• O3-

• O3+

What is the charge on the aluminum ion after losing electrons?

• Al+

• Al2+

• Al3+

• Al4+

What is the process called when ions combine to form a compound?

• Covalent bonding

• Ionic bonding

• Metallic bonding

• Ionization

How do you determine the chemical formula from the charges of ions?

• By cross-multiplying the charges

• By adding the charges

• By subtracting the charges

• By dividing the charges

What is the chemical formula of the compound formed by aluminum and oxygen?

• Al3O2

• Al2O3

• AlO2

• AlO

Which option correctly represents the ratio of aluminum to oxygen in the compound?

• 2:3

• 3:2

• 1:1

• 1:2