Answer:
Velence Electrons-
In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
Group of elements-
Oxygen,carbon, sodium
Metals ang non metals-
Difference Between Metals And Nonmetals. Metals and Nonmetals are different types of materials present around us. ... Metals (like copper and aluminium) are good conductors of heat and electricity, while nonmetals (such as phosphorus and sulfur) are insulators.
Explanation:
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