Alkali Metals
Alkaline Earth Metals
Halogens
Noble Gases
Other
100
lithium
What is Li
100
berylium
What is Be
100
fluorine
What is F
100
helium
What is He
100
O
What is oxygen
200
Sodium
What is Na
200
magnesium
What is Mg
200
Cl
What is chlorine
200
Ne
What is neon
200
P
What is phosphorus
300
potassium
What is K
300
Ca
What is calcium
300
Br
What is bromine
300
argon
What is Ar
300
sulfur
What is S
400
Rb
What is rubidium
400
Sr
What is Strontium
400
I
What is iodine
400
krypton
What is Kr
400
aluminum
What is Al
500
Cs
What is Cesium
500
Ba
What is barium
500
At
What is astatine
500
xenon
What is Xe
500
silicon
What is Si
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