I would say the first three. But I'm not 100% sure. I'm truly sorry if it's wrong
The answer is 1.5e+6. Hope this helped!
Answer:
As electro-negativity decreases from Florine to downwards in the group and only Florine is above Chlorine, so Florine should react with sodium chloride solution to produce chlorine.
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For sediments to become a sedimentary rock, it usually undergoes burial, compaction, and cementation. (Hope that helps)
