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 𝑛, 𝑛 + 1, 𝑛 + 2, and 𝑛 + 3 , where 𝑛 < 10, are tabulated below. What is the value of 𝑛?
Correct Answer: e
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