General Science - Chemistry
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Q.

Which of the following is the least electronegative element?

 A.

Gallium

 B.

Xenon

 C.

Barium

 D.

Cesium

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Solution:
Option(D) is correct

Cesium is the least electronegative element with a stable isotope, caesium-133.

Caesium is mined mostly from pollucite, while the radioisotopes, especially caesium-137, a fission product, are extracted from waste produced by nuclear reactors.


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