Electron Configuration and Orbital Filling

The video tutorial explains how to determine the electron configuration for calcium. It begins by identifying the number of electrons in a calcium atom using the periodic table. The tutorial then guides viewers through filling the 1s, 2s, 2p, 3s, 3p, and 4s orbitals to reach the total of 20 electrons, which is the electron configuration for calcium.

Why is it important to know the number of electrons when finding the electron configuration for an element?

• To determine the element's atomic mass

• To identify the element's position in the periodic table

• To correctly fill the electron orbitals

• To calculate the element's density

How can you find the number of electrons in a calcium atom?

• By measuring the atom's volume

• By counting the neutrons

• By checking the atomic number on the periodic table

• By looking at the atomic mass

What is the maximum number of electrons that can be held in the 1s orbital?

• 6

• 1

• 2

• 4

Which orbitals are filled after the 1s and 2s orbitals in the electron configuration process?

• 3p

• 3s

• 4s

• 2p

How many electrons are placed in the 2p orbital for calcium?

• 2

• 4

• 8

• 6

After filling the 2p orbital, how many electrons have been accounted for in total?

• 10

• 12

• 8

• 6

What is the next orbital filled after the 3s orbital?

• 4s

• 3p

• 1s

• 2p

How many electrons are placed in the 3p orbital for calcium?

• 2

• 4

• 6

• 8

Which orbital is filled last to complete the electron configuration for calcium?

• 2s

• 1s

• 3p

• 4s