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Atomic Structure
The Atom
Question | Answer |
---|---|
What is an Atom | An atom is the smallest part of an element that still has the properties of that element |
What are the three subatomic particles found inside atoms | Protons Electrons Neutrons |
What Charge do Each Of These Particles Have | Protons have a positive charge (+) Electrons have a negative charge (-) Neutrons are neutral i.e. they have no charge (0) |
Where are the Protons And Neutrons Found | Protons and neutrons are found in the nucleus |
Where are the Electrons found | Electrons are found orbiting the nucleus in a region known as the electron cloud |
What scientist Introduced the Atomic Structure | Niels Bohr |
How do you find the No. of Protons in an element | no of protons = atomic number(small no.) |
How do you find the No. of neutrons in an element | no of neutrons = mass number(big no.) - atomic number(small no.) e.g. 12-6 = 6 |
How do you find the No. of Electrons in an element | no. of electrons = no. of protons |
How many electrons can be in each shell | up to 2 electrons can fit into the 1st shell up to 8 electrons can fit into the 2nd shell up to 8 electrons can fit into the 3rd shell up to 2 electrons can fit into the 4th shell |