Respuesta :

sodium atom , potassium atom and cesium atom have the same group number which is group 1
Giangiglia

Answer:

They have similar chemical properties

Explanation:

Hi, those elements all belong to the Group I of the periodic table meaning that they share not only similar electronic configuration (1 electron of valence) but also they have similar chemical properties, being those more marked the higher the atomic number.

  • An example of that shared properties is that all of them react violently with water, being cesium the most violent.

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