An elements reactivity is based on how many electrons are in the valence shell. All elements try to get 8 electrons in there valence shell except hydrogen which can only have two. An element reacts with other elements by gaining or giving an electron and that process of giving or gaining causes the reaction.
Elements on the far left are most reactive because they only have one electron.
The reactivity of an element can be determined by its position in the Periodic Table. Elements in Group 1 and 2 are highly reactive, while noble gases are inert. Reactivity also depends on the ability of an element to gain or lose electrons to achieve a stable electron configuration.
Elements are more reactive as you go down the periodic table and to the left.
Potassium is the most reactive element with oxygen, readily reacting to form potassium oxide.
Plutonium is not highly reactive under normal conditions. It is a relatively stable element that does not react readily with air or water. However, it can be reactive in certain chemical reactions or when exposed to high-energy particles.
This is called a displacement reaction. It occurs when a more reactive element displaces a less reactive element from its compound during a chemical reaction.
A scientist might store a super reactive element with a noble gas as a way to prevent chemical reactions with the surrounding environment. Noble gases are inert and non-reactive, providing a stable environment for storing highly reactive elements. This helps to ensure the safety of handling and storage of the reactive element.
If the element has a full valence shell, such as the noble gases, then it is unreactive. It the element is missing few valence electrons of has few valence electrons, then the element is very reactive, such as the sodium.
Halogens.
Fluorine is the most reactive element.
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The element Californium is reactive.
Hydrogen is not only the lightest element of all, it is also very reactive.
Fluorine(F2) is the most reactive element, known to react with even Xenon, Krypton, Gold, Platinum, etc.
An element is said to be chemically reactive when it combines with another element. These two elements will create a new compound.
If by vital you mean most reactive, then the metal francium, Fr, is the most reactive element.
Potassium is most reactive with the element Oxygen. However, it should be noted that it is most reactive with a non-element: Water.
copper is very un-reactive. lead is more reactive.
Fluorine