Energy valence electrons in an atom of germanium is 4.
In chemistry and physics, a valence electron exists as an electron in the outer shell associated with an atom, and that can experience the formation of a chemical bond. Valence electrons exist as those electrons found in the outermost shell of an atom. In other words, these exist the electrons that can be accumulated or lost during a chemical reaction. The numeral of valence electrons an atom possesses specifies how many covalent bonds it can construct.
The correct solution is option 2.
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