Electron Configuration and Orbital Capacity

The video tutorial explains how to write the electron configuration for aluminum. It starts by identifying the number of electrons using the periodic table. The tutorial then uses a chart to determine the notation for electron configuration. It explains how to fill the 1s, 2s, 2p, 3s, and 3p orbitals with electrons, ensuring the total equals 13, the number of electrons in aluminum. The final configuration is 1S2 2S2 2P6 3S2 3P1.

What is the atomic number of aluminum, and what does it represent?

• 14, representing the number of neutrons

• 15, representing the number of electrons only

• 13, representing the number of protons and electrons

• 12, representing the number of protons only

How many electrons can the 1s orbital hold?

• Four electrons

• Two electrons

• Eight electrons

• Six electrons

After filling the 1s and 2s orbitals, how many electrons have been used?

• Ten electrons

• Four electrons

• Six electrons

• Eight electrons

What is the maximum number of electrons that the 2p orbital can hold?

• Six electrons

• Four electrons

• Eight electrons

• Two electrons

How many electrons are placed in the 3s orbital for aluminum?

• One electron

• Three electrons

• Two electrons

• Four electrons

Before filling the 3p orbital, how many electrons have been used?

• Twelve electrons

• Ten electrons

• Sixteen electrons

• Fourteen electrons

How many electrons are needed in the 3p orbital to complete the electron configuration for aluminum?

• Two electrons

• One electron

• Three electrons

• Four electrons

What is the complete electron configuration for aluminum?

• 1s2 2s2 2p5 3s2 3p1

• 1s2 2s2 2p6 3s1 3p1

• 1s2 2s2 2p6 3s2 3p2

• 1s2 2s2 2p6 3s2 3p1