Determine the number of valence electrons in element. Cs
The valence electrons of an atom are furnished as the electrons reside in the outermost shell. When the outer shell of an atom is incompletely filled, the valence electrons are involved in the notable chemical reaction. The presence of the number of valence electrons of an atom determines the valency of an element or to the number of the element can be combined with it.
Answer: 1
The element cesium (Cs) belongs to group 1A of the periodic table. The atomic number of cesium is 55 and the ground state electronic configuration is furnished as follows: . From the electronic configuration, it is observed that the number of electrons present in the outer shell (sixth) of cesium is one.
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