Monday, October 16, 2006

atomic structure

Lesson Title: Sub-atomic particles

Learning Outcome:

At the end of this your should be able to know the different sub-atomic particles of an atom, what is an isotope and compute for the number of sub-atomic particles provided with a given.

As i have discussed earlier the atom was the smallest indivisible unit of matter it, this was first coined by democritus, and refined by Dalton. But the discovery of Thomson, Rutherford, Chadwick, and Goldstein has made us think otherwise. The atom is no longer a solid sphere but it is made up of several componets the protons, neutrons and electrons.

To learn more about this sub-particles click here.

Computing for the number of protons, electrons and neutrons as well as the atomic number and mass can be a daunting task, but follow this link and you will understand better.

Test your understanding click here

Sometimes elements vary in mass number they are called isotopes

How will you know the identity of the atom?
Is it possible for an atom of the different element to have the same number of electron and neutron? click here to answer or submit in 1 whole paper unique answer is required you will be graded as the following


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