everybody says its caesium but its actually francium but it hasn't been studied in great detail because of its explosive properties and because it has only been collected in small amounts
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The most metallic element on the planet is Francium. It is the last element to be discovered that was not made synthetically.
most metals are metallic in a way. the periodic table consists of 3 different types of elements metals, non metals and metalloids the most metallic are the metals because they posses the most metal like properties.
I would easily say that Fluorine is the most reactive element in the world. Fluorine is the most electronegative of all elements and will react with all elements. It is so reactive that it cannot be found alone in nature.
The metal that is most abundant in the lithosphere is iron. Over 5.6 percent of Earth's mass is comprised of iron.
The most reactive non-metal is fluorine. It is often nicknamed the 'Tyrannosaurus Rex' of the elements because of its reactivity. NB . Oxygen ,which we breath, is also a very reactive element. If it wasn't so reactive we would probably die.