Final answer:
The statement in the question is false. While Nitrogen is a gas at room temperature, Zinc is a solid, and Bromine is a liquid. The state of an element at room temperature depends on its melting and boiling points.
Step-by-step explanation:
The statement provided in your question is false. The elements Zinc, Nitrogen, and Bromine do not all exist in a gaseous state at normal room temperature. Zinc is a solid at room temperature, Nitrogen is indeed a gas, and Bromine is unique in being one of the few elements that exist in a liquid state under standard conditions of temperature and pressure.
In order to determine the state of matter of an element, we must consider its melting point and boiling point. For instance, Nitrogen's boiling point is −195.79 °C, which is why it exists as a gas at normal room temperature. Bromine, on the other hand, has a boiling point of 58.8 °C, which explains why it's a liquid. Zinc's melting point is 419.5 °C, so naturally, it's a solid at room temperature.
These points have to be considered when carrying out chemical tests involving these elements, because the state can greatly affect the interactions and chemical reactions they participate in.
Learn more about States of Matter