Question

What are the s block elements?

Answer 1

Tabular representation of chemical elements organised by atomic number, electron configuration, and recurrent chemical characteristics is known as the periodic table. The table's structure reveals periodic patterns. Metals will be on the left and nonmetals will be on the right in the table's seven rows, known as eras.

Complete answer:
The final electron in the s-block elements reaches the ns energy shell. Because the ns energy shell has a maximum capacity of two electrons, these elements have valence shell configurations of either $n{s^1}$or $n{s^2}$. This block's constituents are found at the far left of the Periodic Table. Alkali metals (Group IA elements) have a $n{s^1}$configuration, whereas alkaline earth metals (Group II elements) have a $n{s^2}$configuration (Group IIA elements). S-block elements are also known as reactive metals.
They are soft metals with low melting and boiling temperatures, the greatest atomic radii in their respective periods, and high heat and electricity conductivity.
They are extremely electropositive due to their low ionisation energy.
They are very reactive and generate ionic compounds easily. They have a constant valency that is determined by the number of electrons in the outermost shell. Alkali metals have monovalent properties, whereas alkaline earth metals have divalent properties. Due to their reactive nature, they are never seen in nature in a free condition.
They operate as powerful reducing agents due to their low ionisation energies and extremely negative electrode potentials.
Electrolysis of aqueous solutions of their salts cannot produce alkali and alkaline earth metals. With the exception of $Be$ and $Mg$ , they all give the flame a distinct colour.
The s-block elements' compounds are mostly ionic and colourless. Lithium and beryllium compounds, on the other hand, are covalent in nature.
They have a strong attraction to oxygen and nonmetals. The oxides are basic in nature. The hydroxides are alkalis that are quite powerful.
They remove hydrogen from acids and produce salts in their stead.
They break down water and quickly emit hydrogen, with the exception of $Be$ and $Mg$.

Note:
The current periodic table is the culmination of several table types produced by scientists throughout the ages. This layout is based on Mendeleev's periodic table, which was first published in $1869$ . The field of chemistry has changed dramatically since then. We gained a better grasp of the components' behaviour.