Wednesday, 13 February 2013

1.15 deduce the number of outer electrons in a main group element from its position in the Periodic Table.


The groups (that's going down the periodic table) tell you how many electrons are on the outer shell!

Also note that the periods (going across) tell you the number of orbitals the atom has.

1 comment:

  1. The Chemistry Syllabus has changed…

    Here is a New blog for the 2017 Syllabus:

    https://igcse-chemistry-2017.blogspot.hk/

    ReplyDelete