Sodium is an alkali metal, placed in period 3, group 1 of the Periodic Table of Mendeleev; the atomic number is 11.
it was formerly called Natrium, its latin name. so the Na come from natrium.
after Jurrasic period it is the Cretaceous period
Sodium is a soft, silver-colored metal at room temperature. It is highly reactive with water, producing a characteristic yellow glow. Sodium is typically stored under oil to protect it from air and moisture.
Silicon is in period 3 on the periodic table. It is the second element in the period, following sodium.
Sulfur is in the 3rd period.
period 3 group 1
group 1
154 pm
Yes
water
heliums period address is 11.09
Natrium. (nah-tree-um)
The period address of hydrogen is 1, as it is located in the first period of the periodic table.
The chemical element "sodium" is an alkali metal.
Sodium's atomic name is sodium (NA).
Do you put a period after a stated when it is abbreviated in an address?
Aluminium is in third period