Question

write the characteristic of s-block element ​

Answer 1

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The s-block contains the elements of group 1 (alkali metals) and group 2 (alkaline earth metals). All these elements are reactive metals, and occur in nature only in combined state. Their compounds, with exception of Li and Be, are predominantly ionic. This is because they have only one or two valence electrons which they can lose readily forming M® or M20 ions. They have low ionization enthalpies, which decrease down the group resulting in increased reactivity.

Answer 2

Answer:

If the elements were houses in our hypothetical s-block neighborhood, they would be very uniform, each one only slightly different than the other. This is markedly different compared to the other neighborhoods on the periodic table, which have a wider variety of houses in many shapes, sizes and colors.

All of the s-block elements are metals. In general, they are shiny, silvery, good conductors of heat and electricity and lose their valence electrons easily. In fact, they lose their trademark s orbital valence electrons so easily that the s-block elements are considered to be some of the most reactive elements on the periodic table.

Sodium, an s-block element, is a silvery and soft metal.

The elements in column 1, known collectively as the alkali metals (except hydrogen), always lose their one valence electron to make a +1 ion. These metals are characterized by being silvery, very soft, not very dense and having low

melting points. These metals react extremely vigorously with water and even oxygen to produce energy and flammable hydrogen gas. They are kept in mineral oil to reduce the chance of an unwanted reaction or worse, an unwanted explosion.

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