Lesson 2 Arranging the electrons and patterns in electron configuration.

Slides:

Advertisements

Similar presentations

Chemistry Homework Notes Read pp , problems pp. 165 #1-5, 10.

Advertisements

An Introduction to Ionic Bonding Unit XX, Presentation 1.

Aim: What are the Properties of Groups and how does the atomic radius change across a period and down a group ? DO Now: 1. Write down the electron configuration.

The Ionic Bond Visit For 100’s of free powerpoints.

Chemistry Chapter 8 Notes #1 Ions Compounds  2 or more elements combined Example: Sodium + Chlorine = Sodium Chloride (which is table salt) A compounds.

Electron Configuration.  In atomic physics and quantum chemistry, electron configuration is the arrangement of electrons of an atom. electrons.

2.3. The periodic table and atomic theory Today we will analyze atoms, see how many protons they have, how many electrons, neutrons and so on….in science.

LECTURE Seventeen CHM 151 ©slg TOPICS: 1. Electronic Configurations, Atoms 2. Electronic Configurations, Ions.

Chapter 19 Chemical Bonds Lesson 1.

The Atom. The atom has three parts: 1) P rotons 2) N eutrons 3) E lectrons.

TOPIC: Ions Do Now: In a neutral atom, the # of Protons equals the # of ___________ 2. Mass Number = ____________________ 3. The charge of the nucleus.

AIM: How to write Lewis Dot Structures (Electron Dot Structures) DO NOW: 1. READ BOTH SIDES OF THE HANDOUT. 2. WRITE THE ELECTRON CONFIGURATION (ORBITAL.

Dmitri Mendeleev Arranged elements by increasing atomic mass

PERIODIC TABLE GROUPS FAMILIAR FAMILIES OF THE PERIODIC TABLE.

Ions and Ionic bonding Chemistry. What’s in an atom? (review and new Info) Atoms are made up of 3 particles: 1.Protons -Located in the nucleus (center.

Bohr Models, Valence and the Octet Rule

Introduction to bonding. Group 1 Li Na K Rb Cs Fr Group 2 Be Mg Ca Sr Ba Ra Group 7 F Cl Br I At All elements in the same group have the same number of.

Lewis Dot Structures of Covalent Compounds Atoms are made up of protons, neutrons, and electrons. The protons and neutrons are located at the center of.

AN ATOM Atom - smallest unit of all matter, that is composed of 3 sub-atomic particles called protons, electrons and neutrons Proton - the 'heavy' positively-charged.

Kayla McAuley. Chemical Reactivity  Some elements are highly reactive while others arent  A chemical reaction: A transformation resulting in a change.

Electron Dot Notation schoolhouse1.fenn.org Vocabulary Valence electrons ? Electron- dot notations ? Octet rule ? Page 169 & 170.

Ionic Bonding Science 10 2 Keeping Track of Electrons The electrons responsible for the chemical properties of atoms are those in the outer energy level.

Topic 3 – Atomic Theory B Gilday – St Thomas Aquinas Secondary The nucleus (centre of an atom) contains protons and neutrons Protons have a one positive.

Title: Lesson 6 Electron Configurations of Ions Learning Objectives: Know how to write full electron configurations of ions using ideas of subshells.

Chemical Bonds Valence electrons are those electrons in the outermost shell of an atom that can be used to form a chemical bond.

Electron Transfer Dot Structures Ionic Compounds.

Bohr Diagrams of Ions Lesson 3 August 27 th, 2010.

L EWIS D OT D IAGRAMS Electron Configuration for s and p orbitals Valence Electrons: form and function.

Electrons Valence Electrons Bohr Models Lewis Dot Structures.

More on Electrons ! !. Find the electron configuration and draw the orbital diagram for…. Na.

Aim: What are the Properties of Groups and how does the atomic radius change across a period and down a group ? Do Now: 1. Take out your periodic tables.

Unit 3: Oxidation States –Oxidation State = Oxidation Number = Valence Number - the charge left on an atom or ion after it has lost or gained electrons.

AIM: How to write Lewis Dot Structures (Electron Dot Structures) DO NOW : 1. WRITE THE ELECTRON CONFIGURATION FOR THE PHOSPHORUS ATOM IN THE GROUND STATE.

Ions Elemental Properties and Patterns Valence Electrons are…? electrons responsible for the chemical properties of atoms, those in the outer energy.

Unit #1 - Chemistry in Action Lesson #4 - Bohr Diagrams

IONS. Neutral Atoms: Review Neutral Atoms have the same number of PROTONS and ELECTRONS. Protons have a POSITIVE charge. + Electrons have a NEGATIVE charge.

Chemistry Ions.

Atoms. Structure of Atoms  Atoms are made up of subatomic particles:

Periodic Table Warm-up Which elements are in the noble gas family? Which elements’ electron configuration ends with s 2 ? How are elements ordered in the.

Bohr Model of the atom. Electron Shells : the rings of elecrtons around the nucleus 2e in the first ring 8e in the second ring 8e in the third ring 18e.

The Octet Rule. Happy atoms have a full outer energy level of electrons. They rarely combine with other elements. Nonreactivity is why they are called.

Day Which metal would you expect to be more reactive - Fr OR Cu? WHY? 2.Which nonmetal would you expect to be more reactive - F OR Ne? WHY?

Science 10 Lesson 2 BOHR MODELS + IONIC BONDING. Student Review  Draw a model for sulfur atom.

Periodic Trends. The Periodic Law When arranged by increasing atomic number, the chemical elements display a regular and repeating pattern of chemical.

The Ionic Bond. Helium, neon and argon are atoms which do not react with other atoms. We call them the Inert Gases (or Noble Gases) because of this. Each.

When an atom gains or loses electrons they become electrically charged particles called When an atom gains or loses electrons they become electrically.

1 Compounds and Their Bonds Octet Rule and Ions Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.

Lewis Dot Diagrams Mr. Buchanan.

Electron Configuration

Going from Neutral to Charged

Putting Atoms Together

Section 4.1 Atoms and Ions.

2.3 Periodic Table and Atomic Theory

Chemistry Lesson 8: Ions

Bohr Model Bohr diagrams show how many electrons appear in each electron shell around an atom The first electron shell holds 2 electrons.

2.3 Periodic Table & Atomic Theory

Chemistry Lesson 8: Ions

IONS and E config Ions are atoms that have lost or gained electrons.

Ionic Bonds Chemistry Mrs. Meemari. Ionic Bonds Chemistry Mrs. Meemari.

The Octet Rule.

Bohr Diagrams of Ions Lesson 5.

0:56 0:55 0:54 0:53 0:57 0:58 1:02 1:01 1:00 0:59 0:52 0:51 0:44 0:43 0:42 0:41 0:45 0:46 0:50 0:49 0:48 0:47 1:03 1:04 1:19 1:18 1:17 1:16 1:20 1:21 1:25.

Bohr Diagrams of Ions Lesson 12 October 20th , 2010.

Presentation transcript:

Lesson 2 Arranging the electrons and patterns in electron configuration

For the GCSE exam you will be required to arrange the electrons for the first 20 elements in the Periodic Table. The arrangement of electrons in an atom is called the Electron Configuration. The 2, 8, 8 rule

Drawing an electron configuration Na Step 1. Draw a blob for the nucleus. Step 2. Draw the first shell. Add 2 electrons. Step 3. Draw the second shell. Add 8 electrons. Step 4. Draw the third shell. Add the last remaining electron.

K

K 2, 8, 8, 1

Group or 8 Number of electrons in outer shell full

When is an atom not an atom? Atoms react with other atoms by losing or gaining electrons. An atom that has lost or gained electrons is called and ION. An atom that has lost electrons (lost negative charges) is called a positive ion and an atom that has gained electrons (gained negative charges) is called a negative ion. In other words an ion is a charged particle. How many electrons are lost or gained depends upon in which Group the element belongs. The aim is to achieve a full outer shell of electrons (in most cases this is 8 electrons).

Group or 8 Number of electrons in outer shell full Number of electrons lost or gained Charge of ion

Group 0 or 8 The atoms of these elements already have a full outer shell. This is why these elements don’t react. Hence they are called the Inert or Noble gases. He Ne Ar Kr Xe Rn 2 2, 8 2, 8, 8 2, 8, 18, 8 2, 8, 18, 18, 8 2, 8, 18, 32, 18, 8 Note the 2, 8, 8 rule only works for the first 20 elements