<span>Because it is capable of forming multiple covalent bonds. I hope 15 hours isn't too late to answer your question.
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Answer:
garreth is the fasstis runner
luigi is the 2 fasts runner
elisa is the 3 fastes runner
Explanation:
Answer: In CaF2, the oxidation number of Ca is +2
, and that of F is -1
. In H2SO4, the oxidation number of H is +1
, that of S is +6
, and that of O is -2
. In CaSO4, the oxidation number of Ca is +2
, that of S is +6
, and that of O is -2
. In HF, the oxidation number of H is +1
, and that of F is -1
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The valves stop the blood from flowing backwards