Chemistry Exam: Electron configuration, Mass & Atomic Number
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Chemistry Exam: Electron configuration, Mass & Atomic Number

Become the Master of solving tasks from Chemistry! Learn Electron Configuration, Mass Number & Atomic Number!
4.9 (6 ratings)
Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.
541 students enrolled
Created by AP Academy
Last updated 1/2017
Current price: $10 Original price: $50 Discount: 80% off
5 hours left at this price!
30-Day Money-Back Guarantee
  • 1.5 hours on-demand video
  • 5 Supplemental Resources
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
What Will I Learn?
  • solve simple and hard task from this part of Chemistry independently
  • determine Atomic Mass and Mass Number from Periodic Table of Elements
  • reckognize Ions and Isotopes in the Tasks with Atomic Number and Mass Number
  • write Electron Configuration of any element using Periodic Table of Elements
  • write Electron Configuration of Ions and with Noble Gas Shortcut
  • know what is the difference between Valence and Valence electrons and apply that into real Task
View Curriculum
  • basic knowledge of Elementary Maths (add, substract, divide, multiply)
  • what does an Atom consist of

Hello There! :D

In this course you will get skills to successfully solve both simple and more advanced tasks in specifical areas of chemistry: Electron Configuration, Mass Number and Atomic Number. These tasks are the real ones - that you are dealing with daily in college and some of you in advanced high schools. 

In this course there is almost none theory, just real tasks! And the best thing is that you can check your knowledge with quizzes after each lesson!

Do I get some bonuses here?

Yes, you do! 

  • you will get Quizzes for self testing your knowledge after each lesson
  • you will get Formulas specially made for this course - that you can use in your class and print it out!
  • two Periodic Tables of Elements (one general - Oxford lab and one special - for Electron configuration determination)
  • you will get an example of Final Exam that includes Electron Configuration, Mass & Atomic Number. And what is the best - you can solve it yourself or we can do it together! Choose what suits you the most.

Who is the target audience?
  • everyone who wishes to fresh their knowledge in mentioned areas of Chemistry
  • everyone who wants to learn fundamentals of chemistry and advanced Chemistry problems solving
  • everyone who wants to enter ACS General Chemistry Exam 
  • everyone who wants to apply to one of the colleges which have Chemistry as obligation subject and needs to have proficient knowledge of Chemistry (eg. Medical schools, Pharmacy colleges, Biological Sciences, Physics, Engeneering and similar areas of studies)
  • everyone who already is in college, but have problems in mastering those materials
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Curriculum For This Course
25 Lectures
2 Lectures 03:09

Hi, my name is Aida and I will be taking you trough the How to solve: Electron Configuration, Mass Number and Atomic Number course. I have been a private tutor in chemistry for five years and I believe that a best way to learn chemistry is by practicing it.

Preview 01:49

With the How to solve: Electron configuration, Atomic Number & Mass Number course you not only get a fantastic set of videos that are introducing you to fundamentals of chemistry, but you also get free cool stuff! Take a look!

What will I get with this course?
Mass Number & Atomic Number
4 Lectures 18:53

Welcome to the first lecture of this course. In this video, we are going to learn what Atomic Number and Mass Number really means. So, let's start!

Preview 03:47

Determine Atomic Number Z and Mass Number A in atom of Iodine, I !

Intro to Mass Number and Atomic Number Part 1
2 questions

Usually In a room where chemistry is taught or practiced, a periodic table is almost certain to be found hanging on the wall. Recall that this chart shows all the known elements and provides a good deal of information about each. As your knowledge of chemistry increases, the periodic table will become more and more useful to you.

Intro to Mass Number and Atomic Number Part 2

Determine the mass number of Bromine, Br, which has 46 neutrons in nucleus.

Intro to Mass Number and Atomic Number Part 2
2 questions

Simply said, isotopes are different versions of certain kind of atom. But what does that really means? Isotopes help scientists learn about the history of some natural events. Carbon dating techniques help us figure out how old some objects are. Oxygen isotopes help us learn about past climates. Some of the water molecules in ice give us clues about Earth's temperature in the past.


An isotope of the element X has 19 electrons and mass number A (X) = 40. Calculate the number of neutrons in an atom of that isotope and determine on which element it is.

1 question

Sometimes an atom can gain or loose electrons. When this happens, charges are not equal, but more positive, if we have more protons, and more negative if we have more electrons. This state when atom has an electrical charge (positive or negative) is called an ion.


The atomic number of the element X is 11, while the particle contains 10 electrons. Write the symbol of that particle.

1 question
Electron configuration
5 Lectures 26:18

Electron configuration trys to explain distribution of electrons in an atom. Electron configuration divides electron cloud in shells, subshells and orbitals and also determine how many electrons one subshell or orbital can contain. 

Electron configuration (s, p subshells)

Determine the electron configurations of lithium, Li and sulphur, S.

Electron configuration (s, p subshells)
1 question

Periodic table can be divided into groups  (vertical elements of the periodic table) and periods (horizontal elements of the periodic table). Seeing the atomic number, one could jump into solving how many protons and electrons are in Selenium...

Electron configuration (s, p, d subshells) Part 1

Hop in to find out how to draw energy level diagram in Chemistry. Yes, you've heard it correctly!

Electron configuration (s, p, d subshells) Part 2

How many unpaired electrons has an atom of potassium, K in the last shell? Potassium has the atomic number Z (K) = 19, and is in the fourth period n = 4 of the periodic table of elements.

Electron configuration (s, p, d subshells) Part 1&2
1 question

To avoid writing the inner-level electrons, we often write electron configuration in a form of a noble gas...

Electron configuration with Noble Gas Shortcut

Determine the electronic configuration of an atom of chlorine, Cl using the configuration it's closest noble gas

Electron configuration with Noble Gas Shortcut
1 question

In this video, we are going to show how to write electron configuration of ions. Moreover, after this lesson, you are going to have all the knowledge needed for solving tasks successfuly from the electron configuration.

Preview 05:51

Determine the electron configuration for selected ions:

    1. Cesium ion, Cs+
    2. Sulphur ion, S2-
Electron configuration of Ions
1 question
Periodic table, Valency and Valence electrons
2 Lectures 08:09

The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons). The rows of the table are called periods; the columns are called groups...

Periodic table, Valency and Valence electrons

According to the position in the periodic table, determine these properties of barium, Ba:

a) the number of electrons in the outer shell 

b) valence

c) whether is metal or nonmetal

Periodic table, Valency and Valence electrons
1 question

Electronegativity is a chemical property that describes the tendency of an atom to attract electrons...


Determine which elements are more electronegative.

1 question
BONUS: Final Exam Completely Solved
11 Lectures 31:20

Task 1

Task 2


Task 4

Task 6

Task 7

Task 8

Task 9

Task 10
Conclusion - Congratulations!!
1 Lecture 00:50
About the Instructor
AP Academy
4.9 Average rating
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541 Students
1 Course
Master of Engineering

"He who says he can, and he who says he can't are both usually right"

When human beings experience trauma with studying chemistry, maths or physics it is not uncommon that their brains go blank, and completely loose confidence in themselves in studying those subjects. When this happens, their perspective on life changes in a way that they're not feeling "worthy enough", or "smart enough" to absorb fine knowledge from this areas of studies.

My great passion is bringing the brighter side of learning those difficult subjects. My goal is that each and every student learn how to become the Master of a subject, who fully and completely understand the material. I have seen in my own eyes that students change over night - from not knowing anything to be as happy as a child when receiveing the best grades and astonishing rewards. And also enrolling in the prestegeus colleges they have always dreamed of.

I have gained this remarkable experiences by working as a private tutor. For already five years, I'm teaching others how to cope with difficult learning problems. As a Master of Engineering, I have strong education background in Physics, Chemistry, Maths, Programming and Probability. And with the greatest rewards (Dean's reward and Rector's prize) I consider myself more than capable to learn others how to be the best student they can possibly become.

And remeber:

"The only person you should try to be better then is the person you were yesterday"