The alkali metals are classified as group one elements on the periodic table because of their surplus of a single electron in the valence electron shell. Halogens, however, are classified as group seven elements, because they have seven electrons in the valence shell.
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Quick Answer. Alkali metals and halogens are likely to form ions because of a surplus or a lack of electrons in their valence (outermost) electron shells. In order for an alkali metal to become a stable ion, it must lose the single electron in its valence shell to a neighboring atom.
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Alkaline and halogens are reactive because usually they are attracted to each other. Why? Because halogens have seven valence electrons, or electrons in their outermost shell, … while alkaline metals only have one valence electron. An example of a halogen is florine and chlorine.
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Alkali metals and halogens are likely to form ions because of a surplus or a lack of electrons in their valence (outermost) electron shells. In order for an alkali metal to become a stable ion, it... Alkali metals and halogens are likely to form ions because of a surplus or a lack of electrons in their valence (outermost) electron shells.
https://www.reference.com/science/halogens-alkali-metals-likely-form-ions-15e834a94af214a8
A: Alkali metals and halogens are likely to form ions because of a surplus or a lack of electrons in their valence (outermost) electron shells. In order for an alkali metal to become a stable ion, it must lose the single electron in its valence shell to a neighboring atom.
https://www.reference.com/science/halogens-alkali-metals-likely-form-ions-15e834a94af214a8
Because alkali metals and halogens are so extremely reactive with each other, they are virtually never found in nature as pure elements by themselves. Alkali metals often react with elements like hydrogen or sulfur to form hydrides and sulfides.
https://www.reference.com/science/halogens-alkali-metals-likely-form-ions-15e834a94af214a8
Alkaline metals are reactive because they contain one electron in their outer shell. Halogens are reactive because they contain seven electrons in their outer shell. The closer the number is to one or seven, the more reactive the element is. Elements with eight electrons in their outer shell show little or no reactivity.
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Why are alkali metals alkaline earth metals and halogens reactive? alkali metals have one valence electron and halogens have 7. since elements always want to have a full outer shell, these two types of elements react easily with each other to … form a full outer shell of 8 electrons.
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Why are alkali metals and alkaline earth metals very reactive? alkali and alkaline earth metals are very reactive because they only have a few electrons in their outer shells (one or two) so they are always wanting to bond with anot … her atom to create a full outer shell (eight electrons).
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Because the alkali metals are the group 1 metals, they have only 1 valence electron that they want to lose, and the halogens are the group 17 nonmetals, they want to gain 1 valence electron to become stable. This question is archived.
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why are halogens and alkali metals reactive
Alkaline metals are reactive because they contain one electron in their outer shell. Halogens are reactive because they contain seven electrons in their outer shell.