Sulfur

Sulfur

• Atomic number: 16
• Atomic weight: 32.066
• Symbol: S
• Electrons and protons: 16
• # of neutrons: 16

Sulfur continued

• Electron configuraton: Ne 3s2 3p4 
• Average atomic mass: 32.063
• Charge of sulfur: 0 neutral
• Electrons per shell: 2, 8, 6

Isotopes

• Sulfur has 25 known isotopes
• Four of them are stable
• The 2nd most common isotope is S-33
• It has 17 neutrons and the atomic mass is 32.9

How to find the average atomic mass

• Find the exact weight of the isotopes
• Multiply each one by their percent abundance
• The percent abundance is in decimal form
• Add the results together 

Ions

• The most common ion has a charge of -2
• To get an ion they add two electrons 
• to a Sulfur atom

How it reflects the many atomic theories

• It reflects Democritus's because it is an atom
• It reflects Dalton's by being an atom of an element
• It reflects Thomson's by having electrons
• It reflects Chadwick's by having neutrons

How it reflects the many atomic theories cont.

• It reflect Rutherford's by including a nucleus
• It reflects Bohr's by having electron levels
• It does NOT reflect the modern theory 

Inaccuracies in model

• Large nucleus
• It does not have electron cloud
• All the particles are the same size