Summary Notes of Year 12 Inorganic Chemistry

, PERIODICITY
of physical or chemical properties across a
period
periodicity
trends
repeating
-




THE PERIODIC TABLE :




Group 1- a l ka l i metals
Group 7-halogens

2- metals
Group alkaline earth
Group 0-noble
gases


D-block -
transition metals




A T O MIC RADIUS



&
decreases across a period

·
number of protons increases
attracting outer electrons in the same shell more
(attraction increases)
·

repeats across all periods




FIRST I O N I S AT I O N >
-
N E R G Y
A




1 of 1
*


energy required to remove mole electrons from


atoms the
mole of in
gaseous state




+
X - X -
e
(g) (g)

*
SAME SHIELDING
S
Li Be B [ N 8 F
&
across a period increases in
general

&

Nuclear charge increases across a period

attraction to the outer electron
There is
greater electrostatic
&




&
More energy required to remove it




·
EXCEPTION :
- removed from a p sub-shell which is of higher energy : less energy is required

B to Be




↑ EXCEPTION :
pair of electrons in a p-orbital which repel : less energy required

N o
+ 0




ELEMENTS IN PER 10 D 3




ELEMENT FORMULA STRUCTURE BONDING

Sodium Na Giant lattice
metallic metallic



Magnesium M9 Giant metallic lattice metallic



Aluminium metallic lattice
Al Giant metallic


Silicon Si Macromolecular covalent