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BabaBlast [244]
2 years ago
12

Iron in rock combining with oxygen to form hematite

Chemistry
1 answer:
blondinia [14]2 years ago
4 0
The answer is a. Chemical change.
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(In attachment)

Formal\, charge = Valence\, electron - (nonbonding\, electrons + \frac{Bonding\,electrons}{2})

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