The video tutorial explains how to write electron configurations and draw orbital diagrams for elements like carbon, silicon, chlorine, and calcium. It introduces the concept of orbital filling order using a diagram and provides step-by-step instructions for each element, highlighting the similarities and differences in their configurations. The tutorial also covers the use of box diagrams to represent electron orientations within orbitals.

Why is it important to understand the order of filling orbitals?

• To predict chemical reactions

• To understand the structure of the nucleus

• To determine the number of protons

• To correctly write electron configurations

Which principal energy level does the P sublevel start at?

• Second

• First

• Fourth

• Third

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

• 4

• 8

• 2

• 6

How many electrons does carbon have?

• 8

• 10

• 4

• 6

In a box diagram, how many boxes are drawn for the p orbitals?

• 1

• 4

• 2

• 3

How many electrons does silicon have?

• 14

• 12

• 16

• 18

What is the last orbital filled for silicon?

• 3p

• 4s

• 3s

• 2p

How many electrons does chlorine have?

• 16

• 18

• 17

• 15

What is the last orbital filled for chlorine?

• 4p

• 4s

• 3p

• 3s

How many electrons does calcium have?

• 21

• 20

• 19

• 18