Answer
Please see the work below.
Work Step by Step
Atomic number = 9.
Electronic configuration - $1s^{2} 2s^{2}2p^{5} $.
The position of this element is in the second period, and it belongs to the 5A group. It is a p-block element.
Atomic number = 20.
Electronic configuration - $1s^{2} 2s^{2}2p^{6} 3s^{2}3p^{6}4s^{2}$.
The position of this element is in the fourth period, and it belongs to the 2A group. It is an s-block element.
Atomic number = 26.
Electronic configuration - $1s^{2} 2s^{2}2p^{6} 3s^{2}3p^{6}4s^{2}3d^{6}$.
The position of this element is in the fourth period, and it belongs to the 8B group. It is a d-block element.
Atomic number = 33.
Electronic configuration - $1s^{2} 2s^{2}2p^{6} 3s^{2}3p^{6}4s^{2}3d^{10}4p^{1}$.
The position of this element is in the fourth period, and it belongs to the 3A group. It is a p-block element.
