The Atomic Structure. What is inside atoms?
The Atomic Structure Thomson (1897) proved that the fundamental particles in all atoms are called electrons.
The Atomic Structure. Rutherford (1920) discovered positively charged particels called Protons.
The Atomic Structure. Chadwick (1932) discovered particles with no electric charge called neutrons.
The Atomic Structure. All atoms contain: electrons.
The Atomic Structure. All atoms contain: protons.
The Atomic Structure. All atoms contain: and neutrons.
The Atomic Structure. except the ordinary hydrogen atom which contains no neutrons.
The atomic structure Particle nameMass (kg)Relative masses electron9.109x proton1.672x neutron1.674x
The nucleus An atom consists of electrons moving around a nucleus in the centre of the atom.
The nucleus The nucleus of ordinary hydrogen is a proton.
The nucleus The nuclei of other atoms consist of protons and neutrons
The nucleus The number of protons Z varies from 1 to 92
The nucleus Many elements with more than 93 protons have been made artificially and they are all radioactive
The nucleus Neutron number N = number of neutrons in the nucleus of an atom.
The nucleus Nucleon number = total number of protons or mass number +neutrons in a nucleus
The nucleus Mass number A= Proton number Z + neutron number N
The nucleus Protons have positive charge.
The nucleus Neutrons have no charge.
The nucleus Electrons have negative charge.
Elecctrons in an atom Elecctrons move in orbits, orbitals or energy levels around the nucleus
Elecctrons in an atom In a neutral atom Number of protons = number of electrons
Elecctrons in an atom The arrangement of electrons in orbitals of an atom is called electronic configuration.
Elecctrons in an atom The chemical properties of an atom of an element depends on the electronic configuration of on atom.
Elecctrons in an atom The first shell is the duplet shell and can accomodate up to a maximum of 2 electrons.
Elecctrons in an atom The second shell is called octet can accomodate up to maximum of 8 electrons.
Electronic configuration Hydrogen H 1
Electronic configuration Hydrogen H 1
Electronic configuration Hydrogen H 1
Electronic configuration Hydrogen H 1
Electronic configuration Hydrogen H 1
Electronic configuration Hydrogen H 1
Electronic configuration Hydrogen H 1
Electronic configuration Hydrogen H 1
Electronic configuration. Hydrogen H 1
Electronic configuration. Hydrogen H 1
Electronic configuration. Hydrogen H 1
Electronic configuration. Hydrogen H 1
Electronic configuration. Hydrogen H 1
Electronic configuration. Hydrogen H 1
Electronic configuration. Hydrogen H 1
Electronic configuration Hydrogen H 1