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First you start of by finding out what the atomic number is of the element, in this case the number is 17.
You then draw a circle, you are aloud to put 2 electrons on this circle. you then draw another cirlce around it, you are aloud to have 8 electrons on the outer shells. you will ned a third circle to put the rest of the elcetrons on to it.
in total you should have the smallest circle with 2 electrons, the middle circle with 8 and then the outer shell with 7 elecrons on it. you can draw the electrons as dots or crosses on the cirlce line.
because the outer shell is not full and only has 7 electrons instead of 8, this means it will be reactive. if an element has a full outer shell then it becomes unreactive.
hope that helped. :)
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoto represent an element its using the Periodic Table (element symbol, Atomic Mass, atomic number)
to represent electrons you draw the electronic structure
to represent atoms draw a circle with the element symbol in the centre. you then draw the electron orbits.
(i think this is right)
Wiki User
∙ 12y agoyou can build up an atom by the collection of protron.eletron.nutron
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