always more than 4
There is no set amount of valence electrons for nonmetals. The amount of valence electrons a nonmetal has is determined by the number of electrons on the outer shell of the atom.
Nonmetals attract electrons.
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Metallic bonds form when the valence electrons of a metal become dissociated from individual atoms and join a mutually shared electron pool. This phenomenon can only happen if these electrons are loosely bound to their atoms, which is a characteristic of metals. Nonmetals and metalloids hold on to their valence electrons too tightly for this to occur.
In the compound Al₂O₃, there are two aluminum (Al) atoms and three oxygen (O) atoms. Aluminum has 3 valence electrons, so 2 Al atoms contribute a total of 6 valence electrons. Oxygen has 6 valence electrons, so 3 O atoms contribute 18 valence electrons. Therefore, the total number of valence electrons in Al₂O₃ is 6 + 18 = 24 valence electrons.
The Halogens.
There is no set amount of valence electrons for nonmetals. The amount of valence electrons a nonmetal has is determined by the number of electrons on the outer shell of the atom.
metals can conduct electricity, the valence electrons of nonmetals cannot roam freely
Nonmetals attract electrons.
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Variable; a correct answer is possible only for a specified nonmetal.
No, atoms of nonmetals usually gain electrons when they combine with other atoms. Nonmetals have a tendency to attract electrons to achieve a stable electron configuration, typically by forming covalent bonds with other nonmetals or by gaining electrons to form anions.
An unbonded oxygen atom has eight electrons, with six of the electrons located in the valence shell. Two of the valence electrons are unpaired, and therefore can undergo covalent bonding with other oxygen atoms or nonmetals (such as hydrogen).
Yes, nonmetals can gain electrons to fill their valence shells. By doing so, they can achieve a stable electron configuration, usually by reaching a full outer shell of electrons (usually 8 electrons, except for hydrogen and helium which only need 2 electrons).
Non-metal atoms gain an electron, or electrons, from another atom to become negatively charged ions.
Halogens.
valence