Electron Configuration and Atomic Structure

The video tutorial explains how to determine the electron configuration for beryllium using the periodic table. It starts by identifying the atomic number to find the number of electrons. The tutorial then guides through writing the electron configuration using the 1s and 2s orbitals, explaining that s orbitals can hold up to two electrons. The process is completed by using all available electrons for beryllium, resulting in the configuration 1s2 2s2. The video concludes with a summary of the steps and thanks viewers for watching.

What does the atomic number of an element represent?

• The number of neutrons

• The number of protons

• The number of isotopes

• The number of molecules

How many electrons can the 1s orbital hold?

• Four electrons

• One electron

• Two electrons

• Three electrons

Which orbital do you fill after the 1s orbital when writing the electron configuration for beryllium?

• 3s orbital

• 2p orbital

• 1p orbital

• 2s orbital

How many electrons are used in total for the electron configuration of beryllium?

• Two electrons

• Four electrons

• Six electrons

• Eight electrons

What is the complete electron configuration notation for beryllium?

• 1s2 2s1

• 1s1 2s2

• 1s2 2p2

• 1s2 2s2

If an element has more electrons than beryllium, which orbital would you fill after 2s?

• 4s orbital

• 3s orbital

• 2p orbital

• 3p orbital