Which alkali metal (Li, Na, K, Rb or Cs) has the highest electronegativity

The same question, asked 2 times: 9 May 2023 S1, 26 Apr 2025 S2. Every wording below, oldest first.

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Question 1
9 May 2023 S1
79 $Which among the following elements has highest electronegativity?$
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Question 2
26 Apr 2025 S2
70 $Which of the following elements has highest electronegativity?$
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