Lanthanides

Hi there,

So sorry, was really busy since the start of school this year. You can't imagine...

Anyway, since Tony has requested for Lanthanides, we will have, with no choice, to provide some things about it. To know why Tony is so powerful, ask any 4I '07. Haha.

Now, Lanthanides... these are the f-block elements, see the two rows that look like being 'inserted' into the Periodic Table.

Picture from http://www.dayah.com/

Let us revise... Why is Gp I and II metals called s block elements?

Li 1s2 2s1
Mg 1s2 2s2 2p6 3s2
K 1s2 2s2 2p6 3s2 3p6 4s1

See the pattern? So why Lanthanides are called the f-block?

Anyway, dun want to dwell too much, else many would have headaches. If you are really interested, I've a good website to recommend, very comprehensive. It is a course website from Oxford University Chemistry Department.

Enjoy!!

p.s. they have got some interesting mnemonics to aid you in remembering the sequence of lanthanides. Go check it out. =)