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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!
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.
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!
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!
Determine Atomic Number Z and Mass Number A in atom of Iodine, I !
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.
Determine the mass number of Bromine, Br, which has 46 neutrons in nucleus.
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.
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.
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.
Determine the electron configurations of lithium, Li and sulphur, S.
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...
Hop in to find out how to draw energy level diagram in Chemistry. Yes, you've heard it correctly!
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.
To avoid writing the inner-level electrons, we often write electron configuration in a form of a noble gas...
Determine the electronic configuration of an atom of chlorine, Cl using the configuration it's closest noble gas
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.
Determine the electron configuration for selected ions:
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...
According to the position in the periodic table, determine these properties of barium, Ba:
a) the number of electrons in the outer shell
c) whether is metal or nonmetal
Electronegativity is a chemical property that describes the tendency of an atom to attract electrons...
Determine which elements are more electronegative.
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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.
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