A pretty weird Table

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.

Image


The Periodic Table in the form first devised by Dimitri Mendeleev

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:

Image

The chemical non reactiveness and stability of the noble gases is attributed to their full outer shell of electrons.

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?

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s