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They are extremely reactive. When combined with water they oxidize and release hydrogen gas and lots of heat. Their outer shell of electrons is very weakly held on and so they can easily ionize to 1+ state.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoAlkali metals often react violently especially so with substances such as water, halogens or Group 6 elements. This is due to their lone electron occupying the outermost shell (or s-orbital if you will) facing a low effective nuclear charge and thus, only weakly attracted to the nucleus. Therefore, it is easily lost to other compounds with a high electronegativity (tendency to attract/accept electrons) such as chlorine and fluorine, resulting in an exothermic reactions. In the case of water, any alkali metal M will react with water according to 2M(s)+2H2O(l)=2MOH(aq) + H2(g). For reactions with halogens (denoted as 'H'), it is M(g)+ H(g)-> MH(s)
Wiki User
∙ 14y agoBoth groups react heavily. Especially alkali metals. If you want some fun, go watch YouTube at the subject sodium in water, potassium in water, or cesium in water.
Halogens can do quite some damage in sufficient quantities.
Wiki User
∙ 8y agoIt is the electron configuration. It is depend on it.
Wiki User
∙ 8y agothey are highly reactivated. more than other metals.
Wiki User
∙ 9y agoThe reactivity on any element depends on its valence electrons. The Alkali metals have one valence electron. They tend to donate it to another element to be the +1 ion.
Wiki User
∙ 8y agoThey are highly reactive.
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What happens to the chemical reactivity of alkali metals as you increase atomic numbers?
The chemical reactivity of alkali metals increase when the atomic number increase.
The two most reactive groups of elements in the periodic table are the alkali metals and the what?
The two most reactive groups of elements in the periodic table are the alkali metals and halogens.
Where are the alkali metals and the halogens located on the periodic table?
Halogens are second from the rightmost column (The Noble Gases) in the periodic table. The Alkali Earth Metals are the second column from the left in the periodic table after the alkali metals.
Which of the following groups of elements are in the main group alkali metals non metals transition elements or halogens?
Alkali metalsNonmetalsHalogens
Which group do alkali metals bond with?
Alkali metals are electropositive so they want to react with halogens which are more electronegative.
What are examples of high reactivity?
Very reactive elements are alkali metals and halogens.
What are the elements that have the greatest reactivity located in the periodic table?
The far left - alkali metals and the far right (not noble metals but next - the Halogens.
What is the correct list of elemental families in order going from left to right?
Alkali metals, transition metals, halogens or Transition metals, halogens, noble gases or Alkali earth metals, halogens, noble gases
What happens to the chemical reactivity of alkali metals as you increase atomic numbers?
The chemical reactivity of alkali metals increase when the atomic number increase.
Differences between alkil metals and halogens?
The elements of the 1st GROUP of the periodic table are called alkali metals. The elements of the 17th GROUP of the periodic table are called halogens. Alkali metals are soft metals whereas halogens are non-metals.
What are the characteristics of semi-metals?
Metalloids are often dull, brittle, varying reactivity compared to halogens, alkali metals, alkali earth metals, and noble gases, can be liquid ( i.e mercury is a metalloid), naturally occurring, and others.
What chemical family is most reactive?
The most reactive groups are alkali metals and halogens.
What are the families in periodic table?
alkali metals, alkali earth, transition metals, non metals, halogens, noble gases
What kind of chemical bond is formed by transfer of electrons between alkali metals halogens?
An ionic bond is formed by electron transfer between alkali metals and halogens.
Alkali metals are an example of?
Alkali metals are lithium, sodium, potassium, rubidium, caesium and francium.They are the metals with the higher chemical reactivity.
What is the most active group of nonmetals noble gases alkali metals halogens alkaline earth?
The most active metals are alkali metals.The most active nonmetals are halogens.
The two most reactive groups of elements in the periodic table are the alkali metals and the what?
The two most reactive groups of elements in the periodic table are the alkali metals and halogens.
