Clue 12
How can valence help you identify
elements on the periodic table?
Mostly Nonmetals
Group
14
15
16
NG
17
Period
1
Metals
18
1
He
H
2
13
Group
Period
1
Period
2
C
N
O
F
Ne
Li
Be
B
Period
2
Period
3
Si
P
S
Cl
Ar
Na
Mg
Al
Period
3
Period
4
Ge
As
Se
Br
Kr
K
Ca
Ga
Period
4
Period
5
Sn
Sb
Te
I
Xe
Rb
Sr
In
Period
5
Period
6
Pb
Bi
Po
At
Rn
Cs
Ba
Tl
Period
6
Valence
4
5
6
7
8
Full
1
2
3
Valence
Gains
4
3
2
1
0
1
2
3
Loses
Electrons
Even Less
Even Less
Less
Most
Non
Most
Less
Even Less
Reactive
Electrons
Reactive
Clue 12
How can valence locate an
element on the Periodic
Table?
What are the valence numbers
for the groups on the Alien
Periodic Table?
Which group or groups
contain gas or gases as a part
of its family?
Clue 12
What is the connection
between the number of
electrons and the number of
protons for each element?
The element Anatom (An) has
atoms with a total of 49
electrons. How many
protons?
Clue 12
What is the connection
between the number of
electrons and the number of
protons for each element?
Zapper (Z) and Pie (Pi) lose
two electrons when they react
to form ionic compounds.
Zapper is used in flashbulbs
and has fewer electrons than
Pie.
An has 49
• An’s atomic number is 49.
• It has 49 protons balanced by 49
electrons. This is the alien version of
Indium (In on our chart).
• Zapper and pie both lose two electrons
when they react to reach the stable
eight. These are both in group 2.
• Zapper is used in flash bulbs.
An has 49
• An’s atomic number is 49.
• It has 49 protons balanced by 49
electrons. This is the alien version of
Indium (In on our chart).
• Zapper and pie both lose two electrons
when they react to reach the stable
eight. These are both in group 2.
• Zapper is used in flash bulbs.
Alien Periodic Table
Group 2 & Period 5