The elements that will have an unpaired electron in the P orbital are the elements of the second and third period. This is because the P orbital can hold up to six electrons. The elements of the second period have two electrons in the P orbital, while the elements of the third period have three electrons in the P orbital. As a result, there is always one unpaired electron in the P orbital for both periods. Therefore, the elements that will have one unpaired electron in the P orbital are Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, and Neon.

The P orbital is also known as the “lobed” orbital because of its shape. It has three different lobes, a positive lobe, a negative lobe, and a zero lobe. The two outer lobes are the most important for understanding the electron configuration and determining the elements that will have one unpaired electron in the P orbital. The positive lobe has one electron, the negative lobe has two electrons, and the zero lobe has no electrons. This means that the elements in the second period have two electrons in the P orbital, so there is one unpaired electron, while the elements in the third period have three electrons in the P orbital, so there are two unpaired electrons.

It is important to note that the elements with one unpaired electron in the P orbital are only located on the right side of the periodic table. This is due to the fact that the P orbital is filled from left to right. The elements that are located on the left side of the periodic table generally have their electrons in the S orbitals. Therefore, the elements with one unpaired electron in the P orbital are those from the second and third period.

In conclusion, the elements that will have one unpaired electron in the P orbital are the elements of the second and third period. These include Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, and Neon. It is important to note that the P orbital is filled from left to right, so the elements that are located on the left side of the periodic table generally have their electrons in the S orbitals. Therefore, the elements with one unpaired electron in the P orbital are the ones located on the right side of the periodic table.