Th reactivity of alkali metals increases from the top of Group 1A to the bottom
the reactivity increases as you go down the group
The chemical reactivity of alkali metals increase when the atomic number increase.
Alkali metals are lithium, sodium, potassium, rubidium, caesium and francium.They are the metals with the higher chemical reactivity.
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Very reactive elements are alkali metals and halogens.
As you move down the alkali metal group on the periodic table, chemical reactivity increases. This is because the outermost electron in alkali metals is easier to lose as you go down the group, resulting in more reactive behavior with water and air. Lithium is the least reactive alkali metal, while cesium is the most reactive.
An example of an alkali metal is sodium (Na), which is known for its high reactivity and is commonly found in nature as part of compounds like table salt (NaCl). A non-example is magnesium (Mg), which is classified as an alkaline earth metal rather than an alkali metal, and it has different chemical properties and reactivity compared to alkali metals.
There is no relation ship. They have the lowest ionization energies.
They metals are stored in oil to minimize the reactivity with air. When alkali metals react with air, they quickly tarnish after begin cut, they burn easily.
These differences doesn't exist.
Dmitri Mendeleev would have understood the reactivity of halogens and alkali metals in terms of their electron configurations and positions in the periodic table. Alkali metals, with one electron in their outer shell, readily lose that electron to achieve a stable noble gas configuration, making them highly reactive. Conversely, halogens, with seven electrons in their outer shell, are eager to gain one electron to complete their octet, which also contributes to their high reactivity. Mendeleev's arrangement of the periodic table highlighted these trends, illustrating the relationship between atomic structure and chemical behavior.
The reactivity of alkali metals increases as you move down Group 1 from lithium to francium. This trend is due to the decreasing ionization energy, which makes it easier for the alkali metals to lose their outermost electron and become more reactive.