You are watching: Which of the following elements are the least reactive?
Also, which of these gaseous elements is least reactive?
Secondly, which noble gas is the least reactive? Noble gases are the least reenergetic of all well-known facets. That"s because via eight valence electrons, their external power levels are full. The just exception is helium, which has actually just 2 electrons.
Also to understand is, which of the adhering to elements is the leastern reactive?
What is the least dangerous element?
1 Answer. Due to its positioning on the regular table, Francium must theoretically be the many reenergetic aspect, however bereason it is also radioactive, Cesium is instead.
Group 18 aspects are nonmetals referred to as noble gases (check out Figure below). They are all colormuch less, odorless gases. Their external power level is likewise full, so they are the leastern reenergetic elements.
The halogens are all elements that are uncovered in group 17 of the regular table. The halogens incorporate fluorine, chlorine, bromine, iodine, and also astatine. All members of the halogen family have actually salso valence electrons. Since these atoms are so cshed to having a complete set of eight valence electrons, they"re extremely reactive.
The reactivity of alkali metals boosts from the peak to the bottom of the group, so lithium (Li) is the least reactive alkali steel and also francium (Fr) is the the majority of reactive.
Noble gas. The noble gases are the chemical aspects in team 18 of the periodic table. They are the a lot of stable as a result of having actually the maximum variety of valence electrons their outer shell can host. Because of this, they hardly ever react through various other facets since they are already stable.
Explanation: The reactivity of an element have the right to be established by looking at the electron configuration of the element. The leastern reactive elements are those that have a full outerthe majority of valence shell ie they have 8 electrons in the outer shell so elements such as helium, neon, radon or the change elements.
The least reenergetic metals would certainly be Platinum, Gold, Palladium, Osmium and also Silver and in the decreasing order. The inertness of the metals are due to the electron configuration in the orbitals.
Group 8A (or VIIIA) of the regular table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name originates from the fact that these elements are virtually unreenergetic in the direction of various other elements or compounds.
The retask of alkali metals rises from the optimal to the bottom of the group, so lithium (Li) is the leastern reenergetic alkali metal and francium (Fr) is the most reenergetic.
The non-metal aspects in Group 7 - well-known as the halogens - obtain less reactive as you go dvery own the team. This is the opposite trend to that viewed in the alkali steels in Group 1 of the routine table . Fluorine is the a lot of reactive facet of all in Group 7.
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Cesium and francium are the many reenergetic aspects in this team. Alkali metals have the right to explode if they are exposed to water.