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Click to see complete answer beside this, i m sorry of these gaseous elements is the very least reactive?
Also Know, i beg your pardon noble gas is the least reactive? Noble gases are the least reactive the all well-known elements. That"s because with eight valence electrons, their outer power levels space full. The only exemption is helium, which has actually just two electrons.
Then, i beg your pardon of the following facets is the the very least reactive?
What is the least dangerous element?
1 Answer. Due to its placing on the routine table, Francium need to theoretically it is in the many reactive element, however because it is also radioactive, Cesium is instead.
team 18 elements are nonmetals referred to as noble gases (see number below). They room all colorless, odorless gases. Your outer energy level is likewise full, so they are the the very least reactive elements.
The halogens space all aspects that are discovered in group 17 the the routine table. The halogens encompass fluorine, chlorine, bromine, iodine, and also astatine. Every members of the halogen family have seven valence electrons. Due to the fact that these atoms room so nearby to having actually a full collection of eight valence electrons, they"re very reactive.
The reactivity that alkali metals increases from the optimal to the bottom the the group, so lithium (Li) is the least reactive alkali metal and also francium (Fr) is the many reactive.
Noble gas. The noble gases space the chemical elements in group 18 that the routine table. They room the many stable due to having the maximum number of valence electron their external shell deserve to hold. Therefore, they seldom react with other aspects since they are already stable.
Explanation: The reactivity of one element can be identified by looking in ~ the electron construction of the element. The least reactive elements room those who have actually a full outermost valence shell ie they have actually 8 electrons in the outer shell for this reason elements such together helium, neon, radon or the shift elements.
The least reactive metals would be Platinum, Gold, Palladium, Osmium and Silver and in the diminish order. The inertness that the metals are due to the electron construction in the orbitals.
Group 8A (or VIIIA) of the regular table space the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and also radon (Rn). The name originates from the truth that these elements are basically unreactive in the direction of other facets or compounds.
The reactivity the alkali metals rises from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and also francium (Fr) is the many reactive.
The non-metal elements in group 7 - well-known as the halogens - acquire less reactive together you go under the group. This is the opposite tendency to that seen in the alkali metals in group 1 the the regular table . Fluorine is the many reactive element of all in team 7.
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Cesium and francium are the most reactive elements in this group. Alkali metals can explode if they space exposed to water.