Understanding Electronic Configuration Concepts

This video tutorial covers the concept of electronic distribution in atoms, emphasizing its importance for exams. It explains the order of filling sublevels based on energy levels, using the Linus Pauling diagram. The tutorial provides examples of electronic distribution for elements like helium, lithium, sodium, calcium, and iron, demonstrating how to arrange electrons in sublevels. The video concludes with a recap and encourages viewers to practice the concepts learned.

Why is understanding electronic configuration important for students?

• It helps in understanding chemical reactions.

• It is crucial for passing exams.

• It is necessary for learning physics.

• It is only useful for chemists.

What is the significance of Linus Pauling's diagram in electronic configuration?

• It explains the chemical bonding process.

• It lists all known elements.

• It provides the order of filling electron sublevels.

• It shows the atomic mass of elements.

Which sublevel can hold a maximum of 10 electrons?

• d

• f

• p

• s

What is the mnemonic used to remember the electron capacity of sublevels?

• Soup of fish from Monday to Friday, 12 to 16 hours.

• Soup of beef from Monday to Friday, 6 to 10 hours.

• Soup of vegetables from Monday to Friday, 8 to 12 hours.

• Soup of chicken from Monday to Friday, 10 to 14 hours.

How many electrons does a neutral Helium atom have?

• 2

• 4

• 1

• 3

What is the electronic configuration of Lithium?

• 1s² 2s¹

• 1s² 2s²

• 1s² 2p¹

• 1s¹ 2s²

Which element has the electronic configuration ending in 3s¹?

• Sodium

• Lithium

• Calcium

• Helium

What is the electronic configuration of Calcium?

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 3d²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4p²

How many electrons are in the 3d sublevel of Iron?

• 10

• 8

• 6

• 4

What is the maximum number of electrons that can be held in the 3d sublevel?

• 12

• 6

• 8

• 10