Already a member?
Sign in
| Version | User | Scope of changes |
|---|---|---|
| Sep 21 2007, 11:01 AM EDT (current) | CookiexMonster | |
| Sep 21 2007, 10:53 AM EDT | CookiexMonster |
Changes
Key: Additions Deletions
Dmitri Mendeleev Created The Periodic Table of The Elements Though There Is No Exact Date As To When. He Worked On It Over A Span Of Years And Added Elements To It As They Were Found. He Even Guessed Where Future Elements Would fit InThe Table Before They Were Even Discovered. Heres What His First Published (1869) Periodic Table Looked Like.
For A Modern Interactive Periodic Table Click Here .
Also, you can go Here.
Mass Number -- Number Of Protons And Neutrons
Atomic Number -- Number Of Protons
Periods -- Horizontal Rows
Groups -- Vertical Columns
Protons -- Positively Charged Particles In The Nucleus
Neutrons -- Particles In The Nucleus Without A Charge
Electrons -- Particles OUTSIDE Of The Nucleus That Are Negatively Charged
For A Modern Interactive Periodic Table Click Here .
Also, you can go Here.
Mass Number -- Number Of Protons And Neutrons
Atomic Number -- Number Of Protons
Periods -- Horizontal Rows
Groups -- Vertical Columns
Protons -- Positively Charged Particles In The Nucleus
Neutrons -- Particles In The Nucleus Without A Charge
Electrons -- Particles OUTSIDE Of The Nucleus That Are Negatively Charged
