Make a Note on Questions on S-Block Elements

S-block elements are highly reactive due to the free electrons in the S-orbit and strong polarising power. S-block elements are also termed as the reducing agent due to the low ionisation property and storing nature of forming covalent bonds. The diagonal relationship within the adjacent compounds in the s-block elements determines the release property of the covalent bond. S-block elements are soft metals and they form alkali when reacted with the water. The alkali metals have a low ionisation property due to the strong power of electronegativity.

What Are S-Block Elements?

S-block elements are those elements in the periodic table that have the last electrons entered in the s-orbit to create covalent bonds. The s-orbital can accommodate only two electrons and this can change the metal properties of the compounds. The compound with only one electron on the outer surface of the s-orbit is defined as the alkali metal. However, the compounds with two free electrons in the s-orbit are defined as the alkali earth metal. S-block elements are related to the polarisation power. S-block contains 14 compounds and the adjacent lines have a low boiling and melting point. 

Specialty in S- Block Elements

S-block elements are far left to the periodic table and the orbit of the elements can occupy a maximum of 2 electrons. The specialty of the s-block element is that they are ready to release electrons for making +2 ions. The s-block elements are easily reacted with water and oxygen to flammable hydrogen and energy. The low boiling and melting point creates instability of the metals in the s-block elements. The alkaline earth metal in the group 2 position of the periodic table has a shiny soft nature and low ionising potential.

Cause of Diagonal Relationship within S- Block Element

Similar properties within the adjacent compounds in the s-block element are due to the same polarising power and low ionisation capacity. The diagonal relationship occurs due to the comparable values of ions and the small radius of the atoms in the periodic table. Same property shows due to the movement from left to right or between top and bottom across a periodic cycle. Moving from left to right increases the electronegativity of the compounds in the periodic table. However, moving down in the periodic table shows a decrease in electronegativity.

Common Name of S- Block Elements

S-block element is generally termed alkali metal and alkali earth metal due to the soft nature and highly reaction capacity with water. The general electron configuration of the s-block element is noble gas ns1 for alkali metals and ns2for alkali earth metals. Group 1 compounds in the S-block element is an alkali metal and group 2 element in the block is called alkali earth metal. The first element of the S-block shows similarities in the boiling and melting point with the elements in the next group in the periodic table.

What Are Invented S-Block Elements?

The invented s-block elements are in 2 groups that have single electron metal in the s-orbit and two-electron metal on the outer surface of the s-orbit. Group 2 S-block elements are less reactive than the group 1 S-block elements. Group 2 S-block elements are beryllium, magnesium, calcium, strontium, barium and radium. Group 1 S-block elements are lithium, sodium, rubidium, potassium, caesium, and francium. Group 1 S-block elements are highly reactive in nature as compared to the group 2 compounds.

Properties of S-Block Elements

• S-block elements are shiny, soft metal with low boiling and melting point
• These elements are highly electropositive and easily recreated with the water and oxygen
• These are reducing agents due to low ionising capacity and strong electron  release capacity
• The metallic character of the element increases from the top to the bottom of the periodic table
• S-block elements readily form ionic compounds with the free electron in the s-orbital.
• The elements have a strong affinity towards oxygen and not metals for the production of hydroxide and strong alkali compound
• It shows diagonal relationship are noted among the elements. 

Conclusion

The above indicates that s-block elements are highly reactive in nature and have low ionisation potential. These elements have strong electropositive nature to produce covalent bonds in the section. S-block elements have a bigger size of atomic radius and free electrons in the S-orbit. Diagonal relationships of S-block elements have application in the industry for the production of washing soda such as sodium carbonate. Further, these elements are useful for softening water and manufacturing glass in the industry.