Atomic structure Flashcards
How published his idea about atoms?
John Dalton published his idea about atoms.
What year did john Dalton share his idea about atoms?
In 1803
What did John Dalton think about atom?
He thought that all matter was made by atom.
When did Electrons got discovered?
Electrons got discovered nearly 100 year later.
Who discovered Electrons?
J J Thomas discovered electrons.
What is plum pudding model?
An early model of the atom in which an atom is a ball of positive charge with Negative electrons embedded.
Who designed an experiment to test plum pudding model?
Ernest Ruther ford designed an experiment from plum pudding model.
When Ernest Ruther ford test them?
Hi test in 1909.
What did Ernest Ruther ford find in experiment
In the experiment hi find out there is an positively charged alpha particle were find in the gold fiol.
What is Alpha particle?
Subatomic particle comprising two protons and two neutrons.
What did new atom called?
It called a nuclear model.
What is inside of nuclear?
The mass of an atom is concentrated at the centre of atom there is Nucleus, that contain protons and neutrons.
What charge does protons have?
Protons have positive charge.
What charge does neutron have?
Neutrons have no charge they are neutrol.
What charge does electrons have?
Electrons have negative charge.
