Can nitrogen replace hydrogen to inflate balloons?

Traditional balloons are filled with hydrogen, and the molar mass of hydrogen is the smallest. When it is used to fill balloons, balloons can float in the air with constraints. If you need to fly, just untie the bound rope and the balloon can fly into the sky. It is often used in some celebrations. However, in recent years, hydrogen balloon explosions have occurred from time to time, and people began to consider finding other gases to fill the balloon. Nitrogen is more stable than hydrogen and is not easy to explode. However, the molar mass of nitrogen is close to that of air, and the balloon is not easy to float when filled with nitrogen, which affects the use effect. It is found that filling balloons with helium is effective. Helium has a small molar mass, so the balloon not only has a good floating effect, but also is not easy to explode.