What is the pH of nitrogen?

If you mean on the periodic table, then Nitrogen is 'N'.

What is the trend of oxide basicity in the periodic table?

The trend of oxide basicity in the periodic table generally increases from left to right and decreases from top to bottom. This means that oxides of elements on the left side of the periodic table tend to be more basic, while oxides of elements on the right side tend to be less basic.

How does one recognize a periodic trend on the periodic table-?

Periodic trends refer to the repeating pattern of properties of elements as you move across a period or down a group on the periodic table. These trends can be recognized by observing how a particular property (such as atomic radius, electronegativity, or ionization energy) changes in a predictable way based on the element's position in the table. By comparing the properties of elements in a specific order, you can identify and analyze periodic trends.

Do you have to memorize the periodic table for your chemistry exam?

No, you do not have to memorize the entire periodic table for your chemistry exam. However, you should be familiar with the trends and patterns within the table.

What is the element of PH in periodic table?

Ph is a benzene ring or as you know a phenyl ring, sometimes you will even see it as Ar (abbreviation for Aryl, where Aryl is an aromatic ring and most times Phenyl) Source: thealwaysfit ,com