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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.

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What are examples of high reactivity?

Very reactive elements are alkali metals and halogens.


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 characteristic does the alkali metals alkaline earth metals and the halogens have in common?

All alkali metals, alkaline earth metals, and halogens have a common valence electron configuration: alkali metals have 1 valence electron, alkaline earth metals have 2 valence electrons, and halogens have 7 valence electrons. This shared electron configuration influences their chemical properties, such as reactivity and bonding tendencies.


What groups are the very reactive elements from?

The very reactive elements are typically found in Group 1 (alkali metals) and Group 17 (halogens) of the periodic table. Alkali metals tend to react violently with water, while halogens are known for their high reactivity and tendency to form salts with metals.


What is three families from the periodic table?

Three families from the periodic table are the alkali metals (group 1), the halogens (group 17), and the noble gases (group 18). Alkali metals are highly reactive, halogens are nonmetals that are also reactive, and noble gases are inert gases with low reactivity.


What is the reactivity group for chlorine?

Chlorine belongs to the reactivity group of halogens. Halogens are highly reactive nonmetals that readily form compounds with other elements. Chlorine, in particular, is known for its strong oxidizing properties.


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.


What are the families in periodic table?

alkali metals, alkali earth, transition metals, non metals, halogens, noble gases


The Family of what is the most reactive group of metals in the periodic table?

The most reactive group of metals in the periodic table is Group 1, the alkali metals. These metals are highly reactive due to their low ionization energies, which means they readily lose their outermost electron to form positive ions. This reactivity increases as you move down the group due to the decreasing ionization energies.


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.


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.