Plane explosion problem

Chemistry Level 3

In early days, hydrogen was used as a fuel in planes (nowadays helium is used ). The planes used to explode very often because hydrogen is a flammable gas. That's why planes were shifted to helium gas for fuel which is inert. But if you are stuck in a situation, where you don't have helium or any other inert gas to be used as a fuel. Only hydrogen is available. Now you have to construct a plane by keeping in mind the resources available and minimize the probability of plane explosion. You are given four options to choose elements to make a plane fuel except noble gases. From which block you want to take elements (I mean favour more) to make a plane? (of-course not hydrogen)

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