Here are the answers to my last blog, 5th August 2012
The Periodic Table contains all the known chemical elements on Earth. Each element has a chemical symbol, consisting of one or two letters. For example, ‘H‘ is hydrogen, ‘He‘ is helium, etc..
It’s easy to look them up since everyone, everywhere uses the same symbols. It’s an international code.
The shape or design of the table may seem pretty weird, but there are good reasons for it.
In the table the noble gases occur as a group of elements on the far right hand side. A group is a vertical column of elements:
So what is a full outer shell of electrons? Or, in other words, how many electrons do the noble gases have in their outer shell, since theirs is described as being full?
And why is it called The Periodic Table anyway? The design of the table appears to be pretty weird, so is there something special about grouping elements in vertical columns (called groups) like this?