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Tin, classified as a post-transition metal, holds 4 valence electrons. The valence electrons of tin can be found by two methods – directly looking at its place (group number) on the periodic table or using its electron configuration.
Methods
Using periodic table
Get the periodic table having the chemical elements marked on it as mentioned above.
Now mark the location of tin on the periodic table.
Next, mark the group number of tin on the periodic table.
The valence electrons of each main-group element can be determined by the column in which it is located.
(i.e., all group 1 elements have 1 valence electron, all group 2 elements have 2 valence electrons, skip the transition metals… then, all group 13 elements have 3 valence electrons, all group 14 elements have 4 valence electrons, and so on up to group 18 elements)
Since tin is in group 14, it has 4 valence electrons.
Using electron configuration
- First, write electron configuration of tin
The electron configuration of tin is [Kr] 5s2 4d10 5p2.
Learn how to find: Tin electron configuration
- Second, find highest energy level in electron configuration
In the above electron configuration, the highest energy level (5) is marked with green color.
- Finally, count electrons of that energy level
The 5th energy level contains 5s and 5p subshells. There are 2 electrons in the 5s subshell and 2 electrons in the 5p subshell. So tin has a total of 2 + 2 = 4 valence electrons.
Next: Antimony valence electrons
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External links
- https://socratic.org/questions/what-is-the-number-of-valence-electrons-in-tin
- https://homework.study.com/explanation/what-is-the-number-of-valence-electrons-in-tin.html
- https://materials.gelsonluz.com/2019/08/valence-electrons-in-tin-sn-facts-color.html
- https://quizlet.com/explanations/questions/how-many-valence-electrons-does-tin-have-9538efeb-2828f4d4-e076-475c-953f-40f792752952
- https://www.chegg.com/homework-help/questions-and-answers/1-many-valence-electrons-tin-sn-atom–14-b-50-c-2-d-4-e-36-q36658827
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