Shells
Atomic Radius
Guess the element
Valence electrons
100
What which elements have the least amount of shells?
Hydrogen and Helium.
100
What is atomic radius?
The size of an atom.
100
This element has 1 valence electron and 1 shell.
Hydrogen.
100
What are valence electrons?
A valence electrons are electrons in the outer most energy level/shell.
200
What happens to the shells when you move down rows in the periodic table?
They increase by one.
200
What are the trends for Atomic radius?
Increases going down and left.
200
This element has 5 valence electrons and 4 shells.
Vanadium.
200
What direction do you move on the periodic table in order to increase the number of valence electrons in the outermost shell?
You move to the right.
300
How many shells does Sodium have?
3
300
What element has the least atomic radius?
Helium.
300
This element has 2 valence electrons and is the most electronegative in its column.
Beryllium. 
300
How many valence electrons does Titanium have in its outermost shell?
2.
400
How many shells does Iron have?
4
400
What element has the most atomic radius?
Francium.
400
This element in the alkaine earth metal, forms a dark oxide-nitride layer.
Calcium.
400
Name a group that has 2 valence electrons on the outermost layer,
Alkaline earth metals, transition metals
500
What is the limit of shells on an element?
6
500
List these elements from the most to the least atomic radius.
Oxygen, Neon, Magnesium, Arsenic.
Magnesium, Arsenic, Oxygen, Neon.
500
This element is gas at a state of 0 c, has the most electronegativity in its column, 2 valence electrons, and 2 energy levels.
Oxygen. 
500
True or false: Zinc has a high valence electron than Cobalt.
False.