Electron Configuration. Periodic Table It is arranged so that similar chemical properties were arranged in vertical columns called groups. Because chemical.

Slides:



Advertisements
Similar presentations
Bohr Models and Lewis Dot Diagrams Science 10. Niels Bohr.
Advertisements

The Periodic table. Periodic Table Elements are classified by their weight and how they react.
Chemistry 1d - Students know how to use the periodic table to determine the number of electrons available for bonding.
The Chemistry of Life.
Bohr model Energy level (shell) Valence electrons
Classification of the Elements
Electron Configuration
Building Atoms. The Periodic Table Will Help You! The PTE is an arrangement of the elements into groups that have similar properties. The horizontal rows.
The Periodic Table When Dimitri Mendeleev developed the Periodic Table, he grouped elements according to their physical properties. As it turns out, there.
Electron Configuration. The way electrons are arranged around the nucleus Electrons are organized around the nucleus so that they are at the lowest energy.
Title: Lesson 5 Drawing Electron Configurations Learning Objectives: Know how to write full electron configurations using ideas of subshells Understand.
Intro to Chemistry. Periodic Table tidbits Period table organization – organized by increasing atomic number Split into metals (left side of stair step.
Electron Configurations for the Ions of Transition Metals & Main Group Elements Chemistry 11.
The Periodic table of Elements By: Mr. Castillo & Mr. Buenrostro.
Unit 3 Periodic Table and Valence electrons
1 Why is the periodic table shaped like it is and how are the elements arranged?
Unit 3 Periodic Table and Valence electrons
Electron Configurations
Periodic Table Section Periodic Table Periodic- Repeated in a pattern Elements are ordered by: increasing atomic number changes in physical & chemical.
Patterns of the Periodic Table & Electron Configuration
Periodic Table for beginners Chapter Organizing the Elements Because the pattern repeated, it was considered to be periodic. Today, this arrangement.
Atoms, Bonding and the Periodic Table p. 13. Valence Electrons Have the highest amount of energy and are held most loosely.
Chapter 6 Chemical Bonds. Valence Electron Remember from chapter 5 we learned that elements that are in the same group have similar properties and behave.
Periodic Table And the Periodic Law. Dmitri Mendeleev Russian chemist Created a table by arranging elements according to atomic masses Noticed that chemical.
Unit 2: Atomic Theory and Periodicity Section 3: Electron Configuration.
Atoms and Bonding Chapter 10-1 We learned that atoms have a nucleus and an electron cloud. The nucleus contains the protons and the neutrons (p+, n neutral).
Overview of the Periodic Table.  First periodic table  Elements were originally arranged in rows by ATOMIC MASS  He noticed that when arranged.
The Periodic Table: Reading the Periodic Table  Each element in the periodic table is represented by its own box, or element key, on the periodic table.
Interpreting the Periodic Table H He LiBeBCNOFNe NaMg KCa AlSiPSClAr
Periodic table & more How it’s arranged and how do electrons fill an atom….
Electron Configurations and Lewis Dot Diagrams
Electron Configurations and Lewis Dot Diagrams
Electron Configurations
Chapter 18 The Periodic Table.
Bohr Diagram, Electron configurations, and charges
Electron Configuration & Orbital Writing
Notes: The Periodic Table.
A substance that is made of only one sort of atom is called an element
Periodic Table Geography
#32 Groups and Period Periodic Table Properties
Electron and Energy Level Notes
3.1 Periodic Table and Periodic Trends
Electron Energy Levels
Electron Configurations
A substance that is made of only one sort of atom is called an element
Periodic Table Of Elements
January 9th, 2018 I can illustrate a Bohr Diagram of the 1st 20 elements on the Periodic Table. SQRS: A chemical equation is shown below. C6H
Notes 5 - Periodic Table Families & Groups
Periodic Table Organization
Electrons in Atoms Electron Configuration Orbital Notation
Periodic blocks energy level is equal to period
Electron Configurations
III. Periodic Trends (p )
Periodic Table Basics.
The Periodic Table 5.3 and 5.4.
Valence Electrons.
Lesson 3.2 The Periodic Table
Electron and Energy Level Notes
Why is the periodic table shaped like it is and how are the elements arranged?
III. Periodic Trends (p )

s p d f A 2A 3B 4B 5B 6B 7B 8B 1B 2B 3A 4A 5A 6A 7A 8A
ELEMENTS AND THE PERIODIC TABLE
3.1 Periodic Table and Periodic Trends
Electrons and Energy Levels
Periodic Table Study Guide Determining Shells and Valence Electrons
Electron configuration explained
s p d f A 2A 3B 4B 5B 6B 7B 8B 1B 2B 3A 4A 5A 6A 7A 8A
Each row is called a “period”
Presentation transcript:

Electron Configuration

Periodic Table It is arranged so that similar chemical properties were arranged in vertical columns called groups. Because chemical properties are based on electronic structure (electron configurations) we can use the table to predict electron configurations for elements along with orbitals.

Looks like…

Periodic Table On the left is a block of 2 columns, then on the right is a block of 6 columns. In the center is a block of 10 columns, and on the bottom there is a block of 14 columns. s subshell = _______ electrons p subshell = _______ electrons d subshell = _______ electrons f subshell = _______ electrons

The 1st energy level (row) Has only 1 sublevel (1s) Has 1 orbital called 1s and can have 2 electrons

The 2nd energy level (row) has 2 sublevels (2s and 2p) 2s, has 1 orbital called 2s and can have 2 electrons 2p, has 3 orbitals called 2p and can have 6 electrons

The 3rd energy level (row) Has 3 sublevels 3s, has 1 orbital called 3s and can have 2 electrons 3p, has 3 orbitals called 3p and can have 6 electrons 3d, has 5 orbitals called 3d and can have 10 electrons

4 th energy level (row) Has 4 sublevels: 4s, has 1 orbital called 4s and can have 2 electrons 4p, has 3 orbitals called 4p and can have 6 electrons 4d, has 5 orbitals called 4d and can have 10 electrons 4f, has 7 orbitals called 4f and can have 14 electrons

Patterns For atoms with just a few electrons, the order in which the electrons fill up the energy levels is exactly the way we would predict: the first two electrons fill up the 1s sublevel, the next two electrons go into the 2s sublevel, the next six go into 2p, and so on. However, once we get to the third energy level, things get a little strange. It turns out that it takes a little less energy for an electron to go into a 4s orbital than into a 3d orbital, and so the 4s fills up before electrons fill the 3d.

Helium The atomic number of helium is 2, so a neutral atom of helium must have 2 electrons. The electron configuration would be 1s 2.

You try now…… What is the electron configuration of Beryllium?

Beryllium Be has 4 electrons, 1s 2 2s 2

You try now What is the electron configuration of Oxygen?

Oxygen O has 8 electrons, 1s 2 2s 2 2p 4

You try now What is the electron configuration of Argon?

Argon Ar has 18 electrons, 1s 2 2s 2 2p 6 3s 2 3p 6

Is this element calcium? 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 - Is this element calcium?

Ways to check The total of all exponents should equal the atomic number of the atom.

The master sequence 1s,2s,2p,3s,3p,4s,3d,4p,5s,4d,5p,6s,4f,5d,6p, …….don’t worry about the rest right now

Applet /electron.htm /electron.htm

Remember that Chemical properties of an elements are basically how different elements bond to each other to form compounds. The valence shell or the outer shell (the shell with the highest energy level) is the one mainly responsible for how an element reacts to form compounds. The rest of the electrons are the “core” electrons.

Elements with similar properties They should have similar valence shell electron configurations. Going down one column of the periodic table, one can see that the valence shell electron configurations are similar.