No, atheism itself does not determine whether someone is jealous or not. Atheism is simply the lack of belief in gods or deities. Like any other group of people, atheists come from diverse backgrounds and have varied personalities, attitudes, and behaviors.
Jealousy is a common human emotion that can be experienced by anyone, regardless of their religious beliefs or lack thereof. It's a complex emotion that arises due to various factors such as insecurity, comparison with others, fear of loss, or a desire for something someone else has.
Being an atheist does not inherently make someone more or less prone to jealousy. People's inclinations towards jealousy are shaped by their individual experiences, personalities, and the circumstances in their lives.
It's important not to make sweeping generalizations about any group of people, including atheists, based on stereotypes or assumptions. Just like with any other characteristic, it is essential to treat people as individuals and not assume specific traits based on their religious beliefs or lack thereof.