Write a brief note on s,p and d block elements.

Explanation

S-block elements: The elements of group -1 and group -2 of modern periodic table are called s-block elements. The group-1 elements are called alkali metals and group -2 elements are called alkaline earth metals the general electronic configuration is `ns^(1-2)`.
P-block elements: The elemetns of group -13 to group -18 of modern periodic table are called p-block elements. The general electronic configuration is `ns^(2) np^(1-6)`.
d-block elements: The elements of group -3 to group -12 of modern periodic table are called d-block elements. They are also called transition elements due to their gradual change in properties.
From metallic to non-metallic character the general electronic configuration is `(n-1)d^(1-10)ns^(1-2)`