Question 19
The $$1^{st}, 2^{nd}$$ and the $$3^{rd}$$ ionization enthalpies, $$I_1, I_2$$ and $$I_3$$, of four atoms with atomic numbers ๐, ๐ + 1, ๐ + 2, and ๐ + 3 , where ๐ < 10, are tabulated below. What is the value of ๐?
Correct Answer: e
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