Question

how to find valence electrons​

Answer 1

Answer:

As was mentioned in a previous section of this chapter, electrons are highly important, because a specific subset of electrons, called valence electrons, are solely-responsible for determining how elements bond with one another. The number of valence electrons that are present in an atom can be determined from that atom's electron configuration. Valence electrons are found in the orbitals associated with an atom's highest occupied energy level. The remaining electrons, which are called inner shell electrons, do not participate in bonding and are, therefore, not important to study.

Consider sulfur's electron configuration, which was determined in the previous section and is replicated below.

${is}^{2} {2s}^{2} {2p}^{6} . {3s}^{2} . {3p}^{4}$

Recall that the energy levels in an electron configuration are the leading red numbers that denote the start of a new energy level/orbital combination. Sulfur has electrons in the first, second, and third energy levels, as indicated by the leading red 1, 2's, and 3's, respectively. Valence electrons are those found in the highest occupied energy level. Therefore, in this case, only those electrons associated with an energy level/orbital combination beginning with a 3 need to be considered. Since two energy level/orbital combinations begin with a 3, both orbitals are selected for further consideration:

${3s}^{2} . {3p}^{4}$

The superscripts associated with these orbitals total to 6. Therefore, sulfur has 6 valence electrons.

Answer 2

friend I hope aap ko yah pasand Aaya Ho.

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