What is the symbol and valency of tin?

The element ‘Tin’ corresponding to the atomic number 50 is often denoted by the symbol ‘Sn’ (derived from the Latin name for tin: Stannum).

Since tin contains 50 electrons (its atomic number is 50), the number of electrons per shell for tin is 2,8,18,18, 4. Since there are only 4 electrons in the outermost shell, tin’s valency can be written as 4. It can be noted that tin is a post-transition metal, and it corresponds to group 14 of the modern periodic table.

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