Atomic Number
50
Element 50
Tin (Sn)
Tin is a chemical element with symbol Sn and atomic number 50. It is a post-transition metal in group 14 of the periodic table. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide.
Atomic Mass
118.71 u
Category
Post-Transition Metal
Period
5
Group
Group 14: carbon group
Phase
solid
Density
7.365 g/cm3
Electron Shells
2, 8, 18, 18, 4
Atomic Structure
Protons: 50. Electrons: 50. Neutrons: Varies by isotope.
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p²
Why Tin Matters
Tin helps connect atomic number 50, post-transition metal behavior, period 5 trends, and electron shell structure. Its solid phase, atomic mass of 118.71 u, and electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p² make it useful for comparing bonding patterns across the periodic table.
Discovery and Occurrence
Tin was discovered Unknown. Tin is a chemical element with symbol Sn and atomic number 50. It is a post-transition metal in group 14 of the periodic table. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide.
Safety and Handling Context
Tin is presented here for learning and comparison. Pure elements and laboratory compounds can have hazards that depend on dose, form, and setting.
Related Elements
Frequently Asked Questions
- What is the atomic number of Tin?
- Tin has atomic number 50, which means a neutral atom has 50 protons and 50 electrons.
- What is the chemical symbol for Tin?
- The chemical symbol for Tin is Sn.
- What category is Tin in?
- Tin is classified as a post-transition metal and sits in period 5 of the periodic table.
Explore Tin in 3D
Use the interactive table above to rotate atomic models, compare periodic trends, and move from Tin to neighboring elements without losing your place.