or

What are s-block and p-block elements? Write down their position modern periodic table.

The elements where the last electron enters in s-orbital are called s-block elements.
The elements where the last electron enters the p-orbital of the outermost shell are called p-block elements.

The position of s-block elements is IA and IIA groups.
The position of p-block elements are from IIIB to IIB group in the periodic table