group 1
154 pm
Yes
water
Natrium. (nah-tree-um)
The chemical element "sodium" is an alkali metal.
period 3 group 1
Sodium's atomic name is sodium (NA).
The density of sodium is about 0.97 grams per cubic centimeter at room temperature.
It is a soft solid metal and easily may be cut down with knife or blade.
The atom right under it and in sodiums family; potassium.
"Na", but be careful: it's a positively charged ion.