Atomic and mass number

6
Atomic Theory

description

Atomic and Mass number

Transcript of Atomic and mass number

Page 1: Atomic and mass number

Atomic Theory

Page 2: Atomic and mass number

• Atomic number is the number of Protons in an atom

• All atoms of a particular element have the SAME number of protons (All Carbon atoms have 6 protons)• In a neutral atom,

The atomic number =The number of electrons

Page 3: Atomic and mass number

• Also called atomic weight or Mass Number• Sum weight of protons and neutrons in an atom

Page 4: Atomic and mass number

Calculate the mass number of each of the following atoms

Page 5: Atomic and mass number

O8

16

Atomic number

Mass number

Symbol

OxygenName

Atomic number= Number of protons= Number of electrons

Mass number= Number of protons + Number of neutrons

Page 6: Atomic and mass number

Calculating Neutrons:

• Mass number = protons + neutronsso…..

• Neutrons = mass number – protons

What is the number of neutrons of the following atom ?

A21

45


Chemistry and Life. The Periodic Table Atomic Number: Number of Protons and Electrons Atomic mass: Mass relative to Carbon-12.

Chemistry and Life. The Periodic Table Atomic Number: Number of Protons and Electrons Atomic mass: Mass relative to Carbon-12.

The Atom Atomic Number and Mass, Isotopes

The Atom Atomic Number and Mass, Isotopes

By: Daniel Sun Atomic Number: 8 Symbol: O Atomic Mass: 15.9994.

By: Daniel Sun Atomic Number: 8 Symbol: O Atomic Mass: 15.9994.

Lecture Presentationpoulinphysics.weebly.com/.../12_lectureslides.pdf · Slide 12-26 Atomic Mass and Atomic Mass Number •The atomic mass number A is the sum of the number of protons

Lecture Presentationpoulinphysics.weebly.com/.../12_lectureslides.pdf · Slide 12-26 Atomic Mass and Atomic Mass Number •The atomic mass number A is the sum of the number of protons

1 The Atom Atomic Number and Mass Number Isotopes.

1 The Atom Atomic Number and Mass Number Isotopes.

Nuclear Chemistry Chapter 23. X A Z Mass Number Atomic Number Element Symbol Atomic number (Z) = number of protons in nucleus Mass number (A) = number.

Nuclear Chemistry Chapter 23. X A Z Mass Number Atomic Number Element Symbol Atomic number (Z) = number of protons in nucleus Mass number (A) = number.

Scandium Sc Atomic Number: 21 Atomic Mass: 44.955910 Atomic Number: 21 Atomic Mass: 44.955910.

Scandium Sc Atomic Number: 21 Atomic Mass: 44.955910 Atomic Number: 21 Atomic Mass: 44.955910.

The Nucleus Chapter 18. Atomic Symbol Notation Atomic Number Mass Number.

The Nucleus Chapter 18. Atomic Symbol Notation Atomic Number Mass Number.

Atomic Number Symbol Element Name Atomic Mass · Atomic Number Symbol Element Name Atomic Mass Subatomic Particle: Color: # Needed: Proton Neutron Electron Reminders: 1. To find the

Atomic Number Symbol Element Name Atomic Mass · Atomic Number Symbol Element Name Atomic Mass Subatomic Particle: Color: # Needed: Proton Neutron Electron Reminders: 1. To find the

ChlorineChlorine. Element Symbol: Cl Atomic Number: 17 Atomic Mass: 35.45.

ChlorineChlorine. Element Symbol: Cl Atomic Number: 17 Atomic Mass: 35.45.

A. Atomic Mass The average atomic mass is the number at the bottom of each square The average atomic mass is the number at the bottom of each square Found.

A. Atomic Mass The average atomic mass is the number at the bottom of each square The average atomic mass is the number at the bottom of each square Found.

Modern Physics By Neil Bronks Atoms C 12 6 Mass Number Mass Number - Number of protons + Neutrons. Atomic Number Atomic Number - Number of protons In.

Modern Physics By Neil Bronks Atoms C 12 6 Mass Number Mass Number - Number of protons + Neutrons. Atomic Number Atomic Number - Number of protons In.

Atomic Number & Mass Number Atomic number = the number of protons

Atomic Number & Mass Number Atomic number = the number of protons

The Atom Atomic Number and Mass Number IsotopesRadioactivity Half Life.

The Atom Atomic Number and Mass Number IsotopesRadioactivity Half Life.

Atomic Number Number of Protons. Mass Number Number of Protons + Neutrons.

Atomic Number Number of Protons. Mass Number Number of Protons + Neutrons.

Nitrogen Element Symbol: N Atomic Number: 7 Atomic Mass: 14.0067.

Nitrogen Element Symbol: N Atomic Number: 7 Atomic Mass: 14.0067.

Review of Atomic Model. Key Words subatomic particle energy levels atomic mass protonisotope electronneutronion atomic mass unit (u)atomic number.

Review of Atomic Model. Key Words subatomic particle energy levels atomic mass protonisotope electronneutronion atomic mass unit (u)atomic number.

2 X A Z Mass Number Atomic Number Element Symbol Atomic number (Z) = number of protons in nucleus Mass number (A) = number of protons + number of neutrons.

2 X A Z Mass Number Atomic Number Element Symbol Atomic number (Z) = number of protons in nucleus Mass number (A) = number of protons + number of neutrons.

'Atomic Mass and Atomic Number Worksheet

'Atomic Mass and Atomic Number Worksheet

PRACTICE DRAWING ATOMS. DRAWING ATOMS RULES PROTONS = Atomic number ELECTRONS = Atomic number NEUTRONS = mass number – atomic number 1 st level can hold.

PRACTICE DRAWING ATOMS. DRAWING ATOMS RULES PROTONS = Atomic number ELECTRONS = Atomic number NEUTRONS = mass number – atomic number 1 st level can hold.