Tin valence electrons

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Tin valence electrons
Tin valence electrons | Image: Learnool

Tin has 4 valence electrons.


We can write the valence electrons of tin using two different methods:

#1 Using periodic table
#2 Using electron configuration

Let’s break down each method in detail.

Using periodic table

Periodic table | Image: Learnool

Get the periodic table having the chemical elements marked on it as mentioned above.

Now mark the location of tin on the periodic table.

Tin location marked on periodic table | Image: Learnool

Next, mark the group number of tin on the periodic table.

Tin group number marked on periodic table | Image: Learnool

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.

  • Second, find highest energy level in electron configuration
Green colored number represent highest energy level | Image: Learnool

In the above electron configuration, the highest energy level (5) is marked with green color.

  • Finally, count electrons of that energy level
Number circled with green color represent electrons | Image: Learnool

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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