In terms of reactivity, Potassium(K) is the most reactive element among group 1 elements.
A group in Periodic Table is the column of element in periodic table
Hydrogen is an extremely active element.
Francium
The most active group of nonmetals are those in Group 17, and these are the halogens. The list is headed by fluorine, which is the most reactive element of the group and of the Periodic Table as a whole.
Calcium, Magnesium, and Radium are all in group two of the periodic table.
YES!!! It is No.110 (Ds ; Darmstatium) It is an artifical radio-active element.
group 14
The element in period 4, group 7 of the periodic table is Manganese (Mn).
Argon (Ar, element number 18) is the last element in the third period of the periodic table.
This element is francium.
lithium
5