Which pair of elements has the most similar chemical properties? 1. K and Ca
2. Cl and Ar
3. P and N
4. C and Na

3. P and N

Explanation:

Since they are in the same family group on the periodic table (the elements in vertical lines), they are the most similar. Hope this helps!

3. P and N

Explanation:

Both elements are in the same group, sharing the most similar properties.

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answer7,570,82356 cubic centimeters;