Answer:
A compound
Step-by-step explanation:
Hello,
When two atoms are bonded via the valance electrons (linkages between them) a compound is formed. Of course it isn't a element by itself because it involves two different atoms. It is a mixture since the elements are chemically bonded instead of physically interacting. Finally, it is not a complex because complexes involves the bonding among different either organic or inorganic ions.
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