What does nitrogen normally exist as? A solid, liquid or gas?

I assume that you mean on Earth under ambient conditions? In that case as a gas.

Nitrogen normally exists as a gas at standard temperature and pressure. To find this information, you can refer to the periodic table or consult reliable scientific sources, such as textbooks or reputable websites. On the periodic table, nitrogen is identified by its symbol "N" and atomic number 7. The properties of nitrogen, including its physical state at standard conditions (0 degrees Celsius and 1 atmosphere of pressure), are typically provided in these sources.