Electron Configuration Principles and Rules

This video tutorial covers electron configurations, focusing on the albow diagram and rules for assigning electrons to orbitals. It provides examples using titanium and sulfur, explaining the alphal principle, poly exclusion principle, and Hun's rule. The tutorial also introduces SPDF notation and the diagonal rule for determining electron order.

What is the primary purpose of the Albow diagram in electron configurations?

• To list the chemical properties of elements

• To display the order of orbitals based on energy levels

• To show the atomic mass of elements

• To provide the atomic number of elements

According to the Aufbau principle, where do electrons enter first?

• The orbital with the most electrons

• The orbital closest to the nucleus

• The lowest energy orbital

• The highest energy orbital

What does the Pauli Exclusion Principle state about electrons in an orbital?

• Only one electron can occupy an orbital

• Electrons must have opposite spins in the same orbital

• Electrons must have the same spin in an orbital

• Electrons can occupy any orbital regardless of energy

How does Hund's Rule affect the filling of orbitals with equal energy?

• Electrons pair up immediately

• Electrons fill the lowest energy orbital first

• Electrons spread out before pairing

• Electrons fill the highest energy orbital first

In the example of titanium, which orbital is filled after 3p?

• 4s

• 1s

• 2p

• 3d

What is the SPDF notation used for?

• To calculate the atomic number of elements

• To determine the chemical properties of elements

• To list the atomic mass of elements

• To write electron configurations without arrows

What is the purpose of the diagonal rule in electron configurations?

• To calculate the atomic mass

• To list the atomic number

• To memorize the order of filling orbitals

• To determine the chemical properties

Which orbital is filled first according to the diagonal rule?

• 4s

• 3d

• 1s

• 2p

How many electrons does sulfur have to fill in its electron configuration?

• 8

• 32

• 16

• 6

What is the final orbital filled in the electron configuration of sulfur?

• 1s

• 4s

• 3p

• 2s