Chapter 4.2 The Quantum Model of the Atom. Electrons as Waves Scientists of the early twentieth century Questioned: 1.Why did hydrogen’s electron exist.
Concept of the Atom Democritus 400 B.C.E., Greece Democritus.
Objectives… To use LED lights to… – Understand how light is produced – Understand how LED lights work – Calculate wavelengths of light – Calculate frequencies.
Atomic Models Atomic Models Please wait to turn in your homework! Be in your seat when the bell rings!
Inonisation part 2, orbiatls and electronic configuration.
Chapter 3 Atomic Theory
ATOMIC STRUCTURE More Clues about the Nature of Elements.
1.Draw a dot-cross diagram for a sodium atom 2.Write an equation to show the first ionisation energy of sodium (its value is +496kJmol -1 ) 3.Write an.
Chapter 3 Atomic Theory. Early Theories 4 elements.
Inonisation part 2, orbiatls and electronic configuration
