Hydrogen can bond strongly with iron in extreme conditions :

Hydrogen can bond strongly with iron in extreme conditions
There may be up to 70 times more hydrogen in Earth's core than in the oceans.
Sample from high-pressure experiment. High-resolution chemical analyses with secondary ion mass spectroscopy showed the abundance of water left in silicate melt after compressing with liquid iron metal. © 2021 Tagawa et al.
Hydrogen is one of the possible alloying elements in the Earth’s core, but its siderophile (iron-loving) nature is debated.
In a new study by the University of Tokyo, scientists experimentally examined hydrogen partitioning between molten iron and silicate melt at 30–60 gigapascals and 3100–4600 kelvin. The experiment involved a diamond anvil and chemicals in simulating the core of the young Earth.

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Tokyo , Japan , Shoh Tagawa , Department Of Earth , University Of Tokyo , Planetary Science , டோக்கியோ , ஜப்பான் , துறை ஆஃப் பூமி , பல்கலைக்கழகம் ஆஃப் டோக்கியோ , கிரகங்கள் அறிவியல் ,