Write an essay on s, p, d and f-block elements.

Based on the entry of differentiating electron, into various sublevels, the elements were classified into 4 blocks.
1) s- Block elements 2) p- Block elements
3) d- Block elements 4) f- Block elements
1) s-block elements :
1) The elements in which differentiating electron enters into outermost s-orbital are called s-block elements.
2) The general electronic configuration of s-block elements is ns^1–2.
3) s-orbital can accommodate only two electrons. So s-Block contains two groups. They are IA
and IIA Group elements.
4) s-Block elements are arranged in left side of the periodic table.
5) s-Block elements are metals and form ionic compounds.
2) p-Block elements :
1) The elements in which differentiating electron enters into outermost p-orbital are called
p-block elements.
2) The general electronic configuration of p-Block elements is ns² np^1–6.
3) p-orbital can accommodate six electrons. So p-Block contains six groups. They are IIIA, IVA, VA, VIA, VIIA, and VIIIA, group elements.
4) p-Block elements are arranged in right side of the periodic table.
5) Most of p-Block elements are non-metals and forms covalent compounds.
3) d-Block elements :
1) The elements in which differentiating electron enters into penultimate d-orbital are called d-block elements.
2) The general electronic configuration of d-block elements is ns^1-2 (n 1) d^1-10.
3) d-orbital can accommodate 10 electrons so these elements are arranged in ten groups.
They are IB to VIIB, VIIIB (3 vertical columns)
4) d-block elements are arranged in middle of the periodic table.
5) These elements shows variable oxidation states.
4) f-block elements :
1) The elements in which differentiating electron enters into anti-penultimate f-orbitals are called f-block elements.
2) The general electronic configuration of f-block elements is ns²(n–1)d^0–1(n–2)f^1–14.
3) These block elements are classified into two series. 4f and 5f series. 4f series is also known as Lanthanide series.
5f series is also known as Actinide series.
4) f-block elements are arranged at bottom of the periodic table.