Here's how to determine the noble gas configuration of tin (Sn):

1. Find Tin's Atomic Number:

* Tin (Sn) has an atomic number of 50, meaning it has 50 protons and 50 electrons.

2. Write the Electronic Configuration:

* The electronic configuration of Sn is: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p²

3. Identify the Previous Noble Gas:

* The previous noble gas on the periodic table is krypton (Kr), which has an atomic number of 36.

4. Use the Noble Gas as a Shorthand:

* The noble gas configuration of tin is [Kr] 4d¹⁰ 5s² 5p²

Explanation:

* The noble gas configuration uses the previous noble gas as a starting point.

* We then include the remaining electron shells and subshells that are filled in tin's electron configuration.

Let me know if you need help with any other noble gas configurations!