Atomic Orbital Diagrams and Electron Configuration

The video tutorial explains how to write the electron configuration and atomic orbital diagram for iron (Fe). It begins by identifying iron's atomic number and electron count, then details the step-by-step process of writing its electron configuration using the periodic table. The tutorial further illustrates how to construct the atomic orbital diagram, emphasizing the arrangement of electrons around the nucleus. The video concludes with a note on alternative diagram formats.

What is the first step in writing the atomic orbital diagram for iron?

• Write the electron configuration

• Determine the number of neutrons

• Calculate the atomic mass

• Identify the valence electrons

How many electrons does a neutral iron atom have?

• 27

• 26

• 25

• 24

Which energy level does the electron configuration of iron start with?

• 4d

• 2s

• 3p

• 1s

How many electrons are used up to the 2p orbital in iron's electron configuration?

• 6

• 8

• 12

• 10

What is the electron configuration of iron at the end of the third energy level?

• 3s1 3p6

• 3s2 3p4

• 3s2 3p6

• 3s2 3p5

What is the purpose of the atomic orbital diagram?

• To show the number of protons

• To determine the number of neutrons

• To illustrate electron distribution around the nucleus

• To calculate atomic mass

In the atomic orbital diagram, how are electrons represented?

• As protons

• As neutrons

• As arrows

• As circles

How are electrons arranged in the 3d orbital of iron?

• All unpaired

• Randomly

• All paired

• Spread out before pairing

What is the final electron configuration for iron?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d6

• 1s2 2s2 2p6 3s2 3p6 4s1 3d7

• 1s2 2s2 2p6 3s2 3p6 4s2 3d5

• 1s2 2s2 2p6 3s2 3p5 4s2 3d7

How can the atomic orbital diagram be represented other than vertically?

• Diagonally

• Horizontally

• In a circle

• In a square