Element Symbols
Al
What is aluminum
H
What is hydrogen
Atomic Number 13
What is aluminum
Noble gas in Period 1
What is helium
drew the first periodic table
What is Dimitry Mendeleyev
Mg
What is magnesium
O
What is oxygen
27 Protons
What is copper
Alkaline earth metal in Period 4
What is calcium
The way the modern periodic table is organised
What is by the atomic number
Au
What is gold
Ag
What is silver
6 electrons
What is carbon
Group 16 Period 2
What is oxygen
Divided elements in Triads
What is Dobereiner
U
What is uranium
Zn
What is zinc
53 protons and 53 electrons
What is iodine
Halogen in Period 3
What is chlorine
Competed for first periodic table
What is Lother Meyer
Pb
What is lead
Hg
What is mercury
15 Protons
What is phosphorus
Non metal in Group 1
What is Hydrogen
There is an element named after him in Periodic table
What is Mendeleev