No, helium gas is not considered to be flammable. Helium is an inert gas, which means it does not readily react with other substances or support combustion. In fact, helium is classified as a non-flammable gas.
Helium has a very stable molecular structure, consisting of two helium atoms. It does not have the necessary properties to undergo combustion or sustain a fire. Unlike flammable gases such as hydrogen or methane, helium does not ignite or burn when exposed to a flame or spark.
Because of its non-flammable nature, helium is often used in applications where flammability is a concern, such as in balloons, airships, and as a cooling medium in various industrial processes. However, it's important to note that while helium itself is not flammable, other substances in the vicinity of helium can still be flammable, and proper safety precautions should be followed to prevent accidents or mishaps.