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Since K stands for potassium, C stands for Carbon and O stands for Oxygen
Answer:
69
Explanation:
hey u said what I said didusbevehdysg
Answer is: A) Sr (strontium).
The reactivity series<span> is a series of metals from highest to lowest reactivity.</span><span> Metal higher in the reactivity series will displace another.
</span>Strontium is only higher in this group from magnesium. Strontium is stronger reducing agent than magnesium, gives electrons easier.
