Warm-Up UV Radiation is always emitted when an electron falls back to which energy level? What color of light is emitted when an electron falls from.

Slides:

Advertisements

Similar presentations

Bohr Model of the Atom Electrons reside in specific energy levels most of the time. When electrons are excited, they can jump from one energy level to.

Advertisements

Quantum Numbers How to find your atom’s address in the Periodic Table Hotel.

Young woman or old woman? What do you see?. Review Light of a particular wavelength (λ) has a particular frequency (v) and energy. Light of a particular.

Electron Location Part II. Principal quantum number (n) - describes the SIZE of the orbital or ENERGY LEVEL of the atom. Angular quantum number (l) or.

Orbitals and Quantum Numbers. Objective Students will be able to describe the quantum numbers n, l, and m l used to define an orbital in an atom, and.

Writing Electron Configuration. Quantum Numbers Quantum numbers define the location of electrons in an atomic orbital. This helps us understand why different.

Labeling Electrons in Atoms. 2) Three numbers give the location of the electrons. The forth describes the spin of the electron. 3) The first quantum number,

Maximum Number of Electrons

Atomic Orbitals And Quantum Numbers. Quantum Numbers A series of 4 numbers (and/or letters) that specify the properties of an electron in its orbit The.

Section 4-3 Electron Configurations. Quantum Mechanical Model Energy Levels have sublevels Each sublevel contains orbitals –Orbital – a 3-D region around.

Atomic Structure Quantum Numbers.  specify the properties of orbitals and of electrons in orbitals  the first three numbers describe: main energy level.

Quantum Numbers n, l, m, and s – Used to describe an electron in an atom Probable location n – Principal Quantum Number – Represents main energy level.

Dr. Chin Chu River Dell Regional High School Unit 3 – Electron Configurations Part E: Electron Configurations.

Quantum Theory/Numbers Week 5/6 Big idea #1. 1) How do we know when an electron has moved from an excited state to the ground state? The electron will.

Protons and Neutrons form a nucleus.. Electrons Atomic Number and Mass Number Atomic Number Is the Number of Protons of the Nucleus.

The Quantum Mechanical Picture of the Atom

Orbitals and Quantum Numbers

Quantums numbers & the probability of where an electron may be found

4.6 Electron Energy Levels

Orbitals and Quantum Numbers

Quantum Numbers Quantum Numbers specify the properties of atomic orbitals and their electrons There are four quantum numbers: principal quantum number.

Chapter 5 Quantum Numbers.

Electron Location Part II

Arrangement of Electrons in Atoms

Quantum Mechanical Model of the Atom

Chapter 3 Atoms and Elements

Basic Chemistry Chapter 5 Electronic Structure and Periodic Trends

Quantum Numbers.

Quantum Numbers AP Chemistry: Chapter 7.

ELECTRONS IN ATOMS.

Warm-Up UV Radiation is always emitted when an electron falls back to which energy level? What color of light is emitted when an electron falls from.

The Quantum Mechanical Model

QUANTUM MECHANICAL MODEL OF THE ATOM

WHAT THE HECK DO I NEED TO BE ABLE TO DO?

The Quantum Model of the Atom.

Using Quantum Numbers to Describe Electrons

Set of 4 numbers used to describe the electrons in terms of :

Ch. 4/5: Atomic Structure Quantum Numbers.

QUANTUM MECHANICAL MODEL OF THE ATOM

QUANTUM NUMBERS developed after work of a guy named Schrödinger

Homework # 10 Worksheet: Quantum Numbers

Electron Location Part II

Electron Orbitals Heisenberg 1. The ____________ ______________ principle states that it is impossible to determine simultaneously both the position and.

Chapter 5 Electronic Structure and Periodic Trends

Quantum Numbers.

III. Quantum Model of the Atom (p )

Chapter 4 Electrons as Waves

Chapter 5 Quantum Numbers Part 1.

Quantum Numbers Activity

Quantum Model of the Atom

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

Quantum Mechanics.

Orbitals and Quantum Numbers

Electron Arrangement in Atoms

Electron Arrangement.

Quantum Mechanics Each electron is a wave that can be described by a series of “quantum numbers” There are four quantum numbers: n, l, ml, ms The combination.

Orbital Shape & Quantum Numbers

Quantum Numbers.

Quantum Numbers Section 3.5.

Atomic Orbitals.

Electron Configuration

Chemistry Chapter 5 Review Game

QUANTUM MECHANICAL MODEL OF THE ATOM

Atomic Orbitals and Electron Arrangement

Electron Arrangement.

Set of 4 numbers used to describe the electrons in terms of :

Quantum Numbers.

The Quantum Mechanical Model

Electrons in the Atom.

Quantum Theory and the Electronic Structure of Atoms

Presentation transcript:

Warm-Up UV Radiation is always emitted when an electron falls back to which energy level? What color of light is emitted when an electron falls from n = 6 to n = 2?

Quantum Numbers

Quantum Numbers 4 different numbers to identify one specific electron in an atom Distance of orbital from the nucleus Shape of the orbital Orientation of the orbital Spin of the electron in the orbital

Principal Quantum Number (n) Indicates main energy level around the nucleus Possible values: 1, 2, 3, 4, 5, … (integers) n = 1 is closest to the nucleus and has the lowest energy

Orbital Quantum Number (l) Indicates shape of orbital Each energy level has different sublevels which are differentiated by their shapes Number of sublevels = n Possible values: 0 to (n-1) Possible orbital types: s, p, d, f (lowest to highest energy)

Orbital Types Energy Level n l Orbital Type

Orbital A region occupied by a maximum of 2 electrons As the number of energy levels increases, there are more orbitals # of orbitals in a main energy level = n2 Degenerate Orbitals – orbitals that have identical energies

Magnetic Quantum Number (ml) Describes orientation of the orbital about the nucleus (position) Possible values: -l to +l Orbital Type l Orbital Shape # of Orientations Notations

s Orbitals

p Orbitals

d Orbitals

f Orbitals

Spin Quantum Number (ms) Indicates state of electron (direction of spin) Counterclockwise (Up) or Clockwise (Down) Only two possible values: +½ and -½

Pauli Exclusion Principle No two electrons can have the same set of 4 quantum numbers ever!!! If two electrons are in the same orbital, they must have opposite spins!

Warm-Up *Pick up the handouts from the front. WITHOUT looking at your notes answer as many of the questions on the Quantum Numbers Practice as you can.