ᴅᴇꜰɪɴᴇ ʜyᴅʀᴏɢᴇɴ.
ʜᴇʟʟᴏ.)
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Answer: A nonmetallic gaseous chemical element with atomic number 1 that is the simplest and lightest of the elements and that is used especially in the processing of fossil fuels and the synthesis of ammonia
Explanation:HI
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