Alkaline earth metals
Milk
Calcium
Arranged elements by atomic Number
Ti, atomic number 22
Titanium
Group 1
Alkali metals
a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid and semiconductor
Silicon
Most reactive earth metal
Radium
Arranged elements in atomic mass
Dmtri mendeleev
5 cents
Nickel
Group 18
noble gases
A lustrous grey metal or metalloid, it is found in nature mainly as the sulfide mineral stibnite
Antimony
It is a shiny gray metal having a low density, low melting point
Magnesium
Proposed the Law of Octaves
John newlands
also known as quicksilver
Mercury
Group 17
Halogens
In its crystalline form it is a brittle, dark, lustrous metalloid
Boron
The symbol is "Sr"
Strontium
: Created a periodic table independently, focusing on physical properties like atomic volume.
Lothar Meyer
named after Tantalus, a figure in Greek mythology.
Tantalum
Group 7
transition metals
a brittle, mildly toxic, rare, silver-white metalloid.
Tellurium
Melting point:727°C
Boiling point:1897°C
Barium
Discovered transuranium elements and reorganized the table to include the actinide series below the main body
Glenn Seaborg
a rare and lustrous silvery-white metal discovered in 1802
Palladium
Unknown properties
a metalloid in the carbon group that is chemically similar to its group neighbors silicon and tin.
Germanium