Which statement best describes how two hydrogen atoms combine to form molecular hydrogen (H2) ?
A. Two neutral hydrogen atoms share electrons in a covalent bond.
B. A positively charged hydrogen ion and a negatively charged hydrogen ion form an covalent bond.
C. A positively charged hydrogen ion and a positively charged hydrogen ion form an ionic bond.
D. A positively charged hydrogen ion and a negatively charged hydrogen ion form an ionic bond.
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