What does dehydration cause?

Dehydration can lead to a loss of strength and stamina. It's a main cause of heat exhaustion. You should be able to reverse dehydration at this stage by drinking more fluids. If dehydration is ongoing (chronic), it can affect your kidney function and increase the risk of kidney stones.

[I copied this from the internet, but hope this helps!]

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answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.