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Caesium has one electron in its outer shell, as it belongs to Group 1 of the periodic table which has one valence electron.
This element is caesium (Cs), with the atomic number 56.
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55
Indium has 3 valence electrons.
8 valence electrons- 1s22s2p63s2p6
Zinc has two valence electrons.
5 valence electrons.
Aluminum has 3 valence electrons.
Beryllium has two valence electrons.
3 valence electrons
There are 3 valence electrons in an atom of aluminium.