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4 votes
Which of the following elements has the lowest ionization energy?

Na

C

F

He

Rb

User Tokland
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2 Answers

5 votes

Answer:

Rb

Step-by-step explanation:

User JamEnergy
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3 votes

Step-by-step explanation:

Na

Na (gas) -> Na+ (g) + e-

User Pete Norris
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