The hydrogen balloon is full of hydrogen, and the hydrogen atom is the first in the periodic table of elements. It contains only one proton, the relative molecular weight is the smallest, and the density of hydrogen is the smallest. In fact, as long as the density is lighter than air, it can be used, but it is not called "hydrogen balloon".
There are also unsafe factors in playing with hydrogen balloons. Hydrogen burns and explodes easily. If there are many hydrogen balloons in densely populated areas, be careful of your own safety! Be careful not to mix hydrogen and chlorine. When their ratio reaches 1: 1, explosion will occur even in direct sunlight, so hydrogen and helium can be filled, because both gases are lighter than air.
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Because hydrogen is cheaper than inert gases such as helium, hydrogen balloons are basically sold in the market. When hydrogen rubs against other objects to generate static electricity, it is easy to explode or burn when it meets an open flame. In addition, the balloons of colorful vendors sold in the market are mostly hydrogen balloons filled with hydrogen, and helium balloons filled with helium are safer.
Case: 2017165438+1On the evening of October 27th, four young people in Nanjing saw the glowing "Internet celebrity balloons", bought six and took a taxi to leave. One of the men accidentally splashed sparks on the balloon while smoking, and six balloons exploded one after another, burning four young people. Two of the men were seriously injured, their faces were blackened, many blisters were burned on their hands, and their faces reached second-degree burns.