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Why do alkali metals exhibit +1 oxidation state and not +2 oxidation state?

a) There is only one valence electron in Alkali metals, on loosing one electron alkali metals achieve noble gas configuration which is most stable. Therefore, in order to achieve stability Alkali metals show only +1 Oxidation state. Due to the small size of Mg the electrons are bound to the nucleus tightly.

Why do alkali metals react violently with water?

Group 1 elements are called alkali metals because of their ability to displace H2(g) from water and create a basic solution. Alkali metals are also known to react violently and explosively with water. This is because enough heat is given off during the exothermic reaction to ignite the H2(g).

Why does sodium and potassium catch fire?

sodium and potassium reacts with water to evolve hydrogen gas which immediately catches fire producing a lot heat . it is an exothermic reaction . sodium when reacting with water is highly exothermic process and h​2 released which is enough to burn it.

Why does potassium react more violently than sodium?

As potassium is larger than sodium, potassium’s valence electron is at a greater distance from the attractive nucleus and is so removed more easily than sodium’s valence electron. As it is removed more easily, it requires less energy, and can be said to be more reactive.

Why does sodium react more violently with water than magnesium?

Explanation: A reactive metal has the ability to easily lose an electron and acquire a positive charge. Sodium easily lose electrons than magnesium and get oxidized to easily.

Which is more electropositive sodium or potassium?

Potassium (K) is more electropositive than sodium (Na). So potassium is below sodium with greater atomic number.

Why is Group I elements known as the most electropositive element?

Group 1 elements are known as the most electropositive elements as the have only 1 electron in their outermost shell which is readily donated to attain a stable electronic configuration.

How many groups are there in P block?

six groups

Why are S block elements most electropositive?

General Characteristics of s-block Elements They are soft metals, possess low melting and boiling points, have the largest atomic radii in their corresponding periods and are good conductors of heat and electricity. They have low values of ionisation energies and are hence highly electropositive.