what r valence shells
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Answer:
The outermost shell or orbital of an atom is called its valence shell. The electrons in these shells take part in bonding with other atoms. It may be fully filled or half-filled.
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The valence shell of an atom, is the set of orbitals which are energetically accessible for accepting electrons to form chemical bonds. For various atoms, the valance electrons are submerged beneath filled shells with a higher principal quantum number
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In chemistry and physics, valence electrons are electrons in the outermost shell of an atom, and that can participate in the formation of a chemical bond if the outermost shell is not closed. In a single covalent bond, a shared pair forms with both atoms in the bond each contributing one valence electron.
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