Elements are in the Periodic Table not substances, the most reactive of those elements would be Fluorine because of its electronegativity.
Fluorine.
And for more information - its chemical symbol is F, its atomic mass is 19. !!
Fluorine and Francium are the most reactive elements and are both poisonous.
Bttom right of the Periodic Table
Recent events would suggest Polonium Po as the most lethal non-metllic element. see link.
Halogens are the most reactive non-metals on the periodic table.
Elements of the periodic table
Metals
Most of the elements on the periodic table are metals.
Bttom right of the Periodic Table
The most corrosive elements on the Periodic Table are all of the halogens.
in the Periodic Table it is the most reactive metals!
Most of them are metals.
On the left side of the periodic table.
Metals are preponderant in the periodic table.
The most reactive nonmetals are the halogens in group 17 of the periodic table.
The most reactive nonmetals are the halogens in group 17 of the periodic table.
Recent events would suggest Polonium Po as the most lethal non-metllic element. see link.
The transition metals are the most common, and are found in the middle (groups 3-12) of the Periodic Table.
Nonmetals are placed in the right side of the periodic table.