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1 vote
Which atom in the pair has a lower ionization energy?

1. S or Se
2. P or S
3. Cs or Na
4. Be or B
5. N or O

User Dzl
by
4.3k points

1 Answer

4 votes
1 - Se
2 - S
3 - Cs
4 - B
5 - O
User Flppv
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5.2k points