Q. Find the successive elements of the periodic table with ionisation energies, 2372, 520 and 890 kJ per mol respectively
A. Li, Be, B
B. H, He, Li
C. B, C, N
D. He, Li, Be
Answer: He, Li, Be
A. Li, Be, B
B. H, He, Li
C. B, C, N
D. He, Li, Be
Answer: He, Li, Be
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