an element is chemically active till it does not attain an inert gas configuration.
When it reacts easily with other elements or compounds.
Technetium is a radioactive chemical element.
F Fluorine is the most reactive
Polonium is a radio-active trans-uranic element. It is a metal.
Francium is the most electropositive chemical element and has the lowest electronegativity; for the fluorine the situation is exactly inverse.
Palladium is a chemical element. It has said to be described as a rare silver white metal which resembles platinum. It never needs to be rhodium plated as it is a natural chemical.
Hassium is a radioactive chemical element.
Technetium is a radioactive chemical element.
Francium is a very radioactive and very chemically reactive chemical element.
The most chemically active element is the halogen known as fluorine. Be
Fluorine, F, is the most reactive element of all.
Plutonium is not an inert chemical element, plutonium is very active.
F Fluorine is the most reactive
Uranium is a natural, radioactive chemical element.
Polonium is a radio-active trans-uranic element. It is a metal.
Radon is a practically inert chemical element, only some compounds are known now.
Sodium is the least reactive in this triade.
No. Be is active, but is nowhere near the most active element.