1. Atomic Structure  There are three subatomic particles which make up atoms  1) Protons: 1 AMU, Positive charge  2) Neutrons: 1 AMU, Neutral charge  3) Electrons:…

Slide 1How Are Electrons Arranged? Electrons are not evenly spread. The exist in layers known as shells. electron configuration.The arrangement of electrons in these shells…

Slide 1The Why and How of Ions Featuring the Return of Bohr-Rutherford Diagrams and the Periodic Table Slide 2 Bohr-Rutherford Diagrams Bohr-Rutherford diagrams (or simply…

Slide 1 Slide 2 nucleus 1 st shell (max. 2 e - ) 2 nd shell (max. 8 e - ) 3 rd shell (max. 8 e - ) Slide 3 X X X X X X X 2.5 No. of electrons = 7 N Valence electrons Slide…

Slide 1The Halogens Chapter 40 Slide 2 F Cl Br I At Gp VII Position in Periodic Table Slide 3 General information HalogenAtomic radius (nm) Ionic radius (nm) Melting Point…

Slide 1Periodic Table of Elements Slide 2 Mendeleev In 1869, Dmitri Ivanovitch Mendeléev created the first accepted version of the periodic table. He grouped elements according…

1. A t o m i cS t r u c t u r e Part 3 2. Recap 3. Recap Isotopes : Atoms of the same element having the same number of protons but different number of neutrons Hydrogen…

1. OBE H. Chemistry2/9/11 What did Rutherford discover about the atom that changed the old atomic model? Who is “most responsible for the current model of the atom? 2.…

Slide 1 Slide 2 How do we Draw Atoms? Bohr Models Lewis Dot Diagrams Slide 3 How to draw a Bohr Model 1. Draw a nucleus & put protons and neutrons inside. (may use a…

Slide 1 Chemistry Revision Material Slide 2 Topics: The Periodic Table –The first 20 elements (name and symbol) –Metals/Non-Metals/Metalloids/Noble Gases –Groups/Periods…