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Among the following which has the lowest electronegativity?

Question and options

Among the following which has the lowest electronegativity?
  1. C
  2. Cs
  3. Be
  4. Zn

Answer and explanation

Correct answer: B - Cs
Cesium is a large alkali metal with the lowest electronegativity (about 0.79) of the options; C 2.55, Be 1.57, Zn 1.65.

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