He is in period 1.
It's Zirconium.
A period on the Periodic Table is another name for the row that an element is on.
Scandium (Sc)
Xenon.
Potassium(K)
It's Zirconium.
A period on the Periodic Table is another name for the row that an element is on.
Scandium (Sc)
Beryllium.
Platinum
There is no element that has been found yet with those characteristics ( group 5, period 2)
Xenon.
Argon is a noble gas element. It belongs to period 3, group 18.
An element square consists of the element's name, symbol, atomic mass, and atomic number.
Potassium(K)
it is in lines due to the period in time when the element was discovererd
an element of period 6 name has hafnium having atomic no 72 and atomic mass as 178.49