Calculating Effective Nuclear Charge in Fluorine and Aluminum

The video tutorial explains the concept of effective nuclear charge and how to calculate it for electrons in different atoms. It begins with an introduction to the concept and a step-by-step calculation for an electron in the n=2 shell of a fluorine atom. The tutorial then provides examples for aluminum and chlorine, demonstrating the calculation of effective nuclear charge for electrons in different energy levels. The video concludes with a summary of the relationship between effective nuclear charge and valence electrons in representative elements.

What is the atomic number of fluorine?

• 10

• 7

• 8

• 9

How many core electrons are present in fluorine?

• 4

• 3

• 2

• 1

What is the effective nuclear charge for an n=2 electron in fluorine?

• 5

• 6

• 7

• 8

What is the effective nuclear charge for an n=1 electron in fluorine?

• 7

• 8

• 9

• 10

What is the atomic number of aluminum?

• 14

• 12

• 11

• 13

How many electrons are in the outermost shell of aluminum?

• 1

• 2

• 3

• 4

What is the effective nuclear charge for an n=3 electron in aluminum?

• 5

• 4

• 3

• 2

What is the atomic number of chlorine?

• 15

• 16

• 17

• 18

How many valence electrons does chlorine have?

• 5

• 6

• 8

• 7

What is the effective nuclear charge for a valence electron in chlorine?

• 7

• 6

• 8

• 5