An atom requires 8 valence electrons to be chemically stable. The elements with 8 valence electrons are the Noble Gases, and they are both stable and largely unreactive.
Yes, the stability of noble gas elements other than helium is due to their having eight valence electrons. This electron configuration, known as an octet, gives them a full outer energy level, making them highly stable and less likely to form chemical bonds with other elements.
getting a ful set of valence electrons
Valence electrons are the electrons on the outer shell of an atom. Valence electrons help to determine the reactivity of a substance because atoms do their best to "fill" their outer shell with 8 electrons, thus achieving a more stable energetic state. Different atoms have different numbers of valence electrons, which affects their reactivity. For instance, noble gases are inert because they possess a full set of valence electrons and don't need to "borrow" or "give away" electrons to have a full outer shell. Halogens, on the other hand, are 1 electron away from filling their outer shell, and are very reactive as a result (they attempt to "borrow" an electron with other atoms by forming a chemical bond).
Reactivity generally increases down a group of atoms. This is because as you move down the group, the atomic radius increases and the valence electrons become further from the nucleus. As a result, the valence electrons are less strongly attracted to the nucleus, making them more easily available for bond formation and chemical reactions.
Chemical reactions that result in transference of electrons
Yes, the stability of noble gas elements other than helium is due to their having eight valence electrons. This electron configuration, known as an octet, gives them a full outer energy level, making them highly stable and less likely to form chemical bonds with other elements.
Getting a full set of valence electrons
Getting a full set of valence electrons
Getting a full set of valence electrons
Getting a full set of valence electrons
getting a ful set of valence electrons
Nonmetals will undergo chemical reactions that result in a stable electron configuration of 8 electrons in the outer shell. The number of valence electrons tells you have many they have in their outer shell prior to any chemical reaction, and therefore, how many more electrons they need to get a complete set of 8. So for example, oxygen has 6 valence electrons and therefore needs 2 more to have 8, so it will form an ion with a charge of minus two, which is the charge that is carried by the additional two electrons that oxygen will acquire. Chlorine has 7 valence electrons, therefore it needs just one more electron to complete its outer shell, and as an ion will have a charge of minus one. Nitrogen has 5 valence electrons, so it needs 3 more, and will form an ion with a charge of minus three.
Valence electrons are the electrons on the outer shell of an atom. Valence electrons help to determine the reactivity of a substance because atoms do their best to "fill" their outer shell with 8 electrons, thus achieving a more stable energetic state. Different atoms have different numbers of valence electrons, which affects their reactivity. For instance, noble gases are inert because they possess a full set of valence electrons and don't need to "borrow" or "give away" electrons to have a full outer shell. Halogens, on the other hand, are 1 electron away from filling their outer shell, and are very reactive as a result (they attempt to "borrow" an electron with other atoms by forming a chemical bond).
Neon is not reactive at all because it has a full p sublevel of electrons (8 valence electrons total). This is a very stable configuration, and as a result, neon is neither a reactant nor a product in normal chemical reactions.
Reactivity generally increases down a group of atoms. This is because as you move down the group, the atomic radius increases and the valence electrons become further from the nucleus. As a result, the valence electrons are less strongly attracted to the nucleus, making them more easily available for bond formation and chemical reactions.
ELECTRONS
Chemical reactions that result in transference of electrons