We've got 18 elements to choose from. From the beginning we've been asked, "Why only cover 18?" The rules for the first 18 elements are very straightforward:

(1) Electrons fit nicely into three shells. Remember that the shells are the places you will find the electrons as they spin around the nucleus.
(2) These elements make up most of the matter in the Universe.
(3) It is a lot easier to remember facts about 18 elements than over 100 elements.

THE LIST

Element 1: Hydrogen
Element 2: Helium
Element 3: Lithium
Element 4: Beryllium
Element 5: Boron
Element 6: Carbon
Element 7: Nitrogen
Element 8: Oxygen
Element 9: Fluorine
Element 10: Neon
Element 11: Sodium
Element 12: Magnesium
Element 13: Aluminum
Element 14: Silicon
Element 15: Phosphorus
Element 16: Sulfur
Element 17: Chlorine
Element 18: Argon

More Than 18?

Yes, it's true. We have added elements 18-36 to our list. You can learn about element origins, pronunciation, atomic structure, and locations. This next set of elements is from the fourth period/row of the table. Be aware... The easy rules don't apply here. We tried to make things as simple as possible.

Element 19: Potassium
Element 20: Calcium
Element 21: Scandium
Element 22: Titanium
Element 23: Vanadium
Element 24: Chromium
Element 25: Manganese
Element 26: Iron
Element 27: Cobalt
Element 28: Nickel
Element 29: Copper
Element 30: Zinc
Element 31: Gallium
Element 32: Germanium
Element 33: Arsenic
Element 34: Selenium
Element 35: Bromine
Element 36: Krypton

RELATED LINKS

- Biology4Kids: Scientific Method
- Geography4Kids: Nutrient Cycles
- Geography4Kids: Biosphere

-	Overview
-	Periodic Table
>	Element List
-	Families
-	Halogens
-	Noble Gases
-	Metals
-	Alkali Metals
-	Alkaline Earth
-	Transition Metals
-	Lanthanide
-	Actinide
	MORE CHEMISTRY TOPICS

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