Electron configuration explained

Slides:

Advertisements

Similar presentations

Ions Biochemistry.

Advertisements

1 Chapter 3 Electronic Structure and Periodic Law 3.4 Electronic Configurations Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.

A 2A 3B4B5B6B7B8B 1B2B 3A4A5A6A7A 8Agroup # = # valence (outside) e- d p f s Row = # shells.

ELECTRONS IN ATOMS. Address of electrons in atoms.

Electronic Configuration Pauli exclusion principle – no two electrons in an atom can have the same four quantum numbers.

Dot Structures.

Electron Configuration

Electrons Core electrons Electrons found in the inner shells Valence electrons Found in the outermost shell of an atom Energy Levels Each layer or shell.

Daily Science Oct 16 Write the shorthand electron configurations for the following:  Cu  I  F  Hg.

Chapter 4 Electrons. ELECTRON BEHAVIOR Who made this model of the atom?

ELECTRON CONFIGURATION Section 5.2. Stability  Lowest possible energy.

Valence Electrons. Electrons Electrons are found in orbitals within energy levels The regions in an atom where electrons are found are called orbitals.

Drawing Atoms. Draw a Bohr model of an atom Describe the meaning of the energy level number Key Words Bohr model energy level valence electrons.

Hybridization of Carbon

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.

Quantum Mechanics. Electron Density Gives the probability that an electron will be found in a particular region of an atom Regions of high electron density.

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

N - principle quantum number - determines distance from the nucleus and energy l - orbital angular momentum quantum number l = 0, 1, 2,… n-1 m l - magnetic.

Each energy level is like a step on a stair. Electrons move up or down energy levels like going up or down stairs.

Energy Unit Orbital Diagrams & Electrons Configurations.

Electron Configuration. WHHYYYYY do we need to learn this? When atoms interact, it’s the valence electrons that interact first. Atoms are least stable.

Chapter 6 Section 2.

Electron Configurations

Chemical Bonds 8th 4.1 Why Do Atoms Combine?.

Electron Configurations

8.2 Families and Periods of the Periodic Table

Atomic Structure and the Periodic Table

Electrons Core electrons Valence electrons Energy Levels

The Bohr Model of the Atom

PRESENTED BY D .M CHANDRASHEKAR & B.N.BHAGYA

Electron Configuration

Unit 3 Part 2: Electrons.

ELECTRONS IN ATOMS.

Chapter 7-1 Electrons and their Energy Levels Part 2

Orbital Diagrams & Electrons Configurations

Electron Energy Levels

Electrons orbit the nucleus only within allowed energy levels.

Atoms: Electron Configuration

Electron Shells Main Concept:

Chapter 4 Test 20 multiple choice questions. Test will be given Wednesday October 16, 2013.

Electron Configuration

Electron Configuration

Wave-Mechanical Model of the Atom

Electron Configurations

Bohr's Model of the Atom.

Order in which subshells are filled with electrons

Electron Arrangement in Atoms

Atomic Orbitals The energy levels of electrons are labeled by principal quantum numbers (n) Each energy sublevel corresponds to an orbital of a different.

Electron Arrangement.

Pre – AP Physical Science

Bohr’s Model of the Atom

Modern Structure of Hydrogen atom

ELECTRON CONFIGURATION

Unit 6, Lesson 3: Orbitals.

Section 3: Modern Atomic Theory

Electron Arrangement in Atoms

Bonds, Chemical Bonds Chapter 0013.

Atoms, Orbitals & Functional Groups

Section 3: Modern Atomic Theory

Electrons in the Atom.

s p d f A 2A 3B 4B 5B 6B 7B 8B 1B 2B 3A 4A 5A 6A 7A 8A

Chemical Bonds 8th 4.1 Why Do Atoms Combine?.

Subshells and Orbitals

More about Elements.

s p d f A 2A 3B 4B 5B 6B 7B 8B 1B 2B 3A 4A 5A 6A 7A 8A

Chapter 7-1 Electrons and their Energy Levels Part 2

Electron Configuration

Basic Chemistry Introduction

Chemistry of Life 2.1 The nature of matter

Electron Configuration Number of Protons = Number of Electrons

Presentation transcript:

Electron configuration explained.......

Energy levels within an atom.... Shell number Total number of electrons (2n2) Number of subshells Subshell in shell Number of orbitals in subshell 1 2 1s 8 2s 2p 3 18 3s 3p 3d 5 4 32 4s 4p 4d 4f 7 50 5s etc etc 1 etc etc

Subshell energy levels

How do the sub shells fill up? 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 6f etc 7s 7p 7d 7f etc

Orbital shapes d orbitals s orbital p orbitals

Why is all this sooooooo important? Outer most electrons are called the: VALENCE ELECTRONS Valence e- are involved in chemical reactions!!! By knowing the configuration, we can attempt to predict the chemical nature of an element

Why is all this sooooooo important? We have been describing “ground state” for e- configuration or the most stable state. If 1 or more e- occupies a higher energy subshell out of order, then the atom is in an: “EXCITED STATE”