The two most reactive groups of elements are the alkali metals and the halogens, because of their valence electrons.Also, which group has least reactive elements?
Group 18: Noble Gases Group 18 elements are nonmetals called noble gases (see Figure below). They are all colorless, odorless gases. Their outer energy level is also full, so they are the least reactive elements.
Beside above, what is the most active element in Group 1? cesium
Subsequently, one may also ask, which group has the most reactive nonmetals?
halogens
What chemical family of elements contains the most reactive metals?
1 Answer. The family that contains the most reactive metals are the alkali metals.
Which chemical family is the most reactive?
The halogens, alkali metals, and alkaline earth metals are highly reactive. - The most reactive element is fluorine, the first element in the halogen group.
- The most reactive metal is francium, the last alkali metal (and most expensive element).
- The least reactive elements are the noble gases.
Why are halogens so reactive?
Halogens are highly reactive, and they can be harmful or lethal to biological organisms in sufficient quantities. This reactivity is due to high electronegativity and high effective nuclear charge. Halogens can gain an electron by reacting with atoms of other elements. Fluorine is one of the most reactive elements.Who discovered halogens?
Davy's name for the element prevailed. However, in 1826, the Swedish chemist Baron Jöns Jacob Berzelius proposed the term "halogen" for the elements fluorine, chlorine, and iodine, which produce a sea-salt-like substance when they form a compound with an alkaline metal.Which element is least reactive in Group 7?
halogens
Which two families are the most reactive?
The two most reactive families of elements are the halogens and the alkali metals. How do they differ in their reactivities?Which side of the periodic table is most reactive?
left
Which element is least reactive in Group 1?
The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive.What is the least reactive nonmetal?
Answer and Explanation: The least reactive non-metal is helium. Helium is a noble gas at the top of the noble gas family, which is group 18.Which metal is most reactive?
cesium
Which alkali metal is most reactive?
Cesium
What family are the most reactive metals?
alkali metals
What makes a nonmetal reactive?
Some nonmetals are very reactive, whereas others are not reactive at all. It depends on the number of electrons in their outer energy level. Reactive nonmetals tend to gain electrons. This explains why they cannot conduct electricity, which is a flow of electrons.Which nonmetals are most reactive and why?
The most reactive nonmetals reside in the upper right portion of the periodic table. Since the noble gases are a special group because of their lack of reactivity, the element fluorine is the most reactive nonmetal.Which is more reactive metal or nonmetal?
Non-metallic Character of a Metal Nonmetals tend to gain electrons in chemical reactions and have a high attraction for electrons within a compound. The most reactive nonmetals reside in the upper right portion of the periodic table. However, the element fluorine is the most reactive nonmetal.What is the heaviest element?
uranium
Which element is least reactive in Group 2?
The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive.Where are halogens found?
All of the halogens can be found in the Earth's crust. Fluorine and chlorine are fairly abundant with iodine and bromine being somewhat rare. Astatine is extremely rare and is considered one of the rarest naturally occurring elements on Earth. 
