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So to wrap up today's lesson, can you guys tell me what you've learned today?
Sir William Ramsay and Lord Rayleigh discovered noble gases!
Well, we learned that Mendeleev created the first Periodic Table!
Rutherford discovered the electrons that orbit the nuclear of an atom!
Didn't Bohr say that electrons circles the nucleus in...
Orbitals! Thats how electron move around the nucleus!
A guy named James Chadwick discovered neutrons in 1932!
Thats the bell! Don't forget to hand in your work before you leave! Class dismissed!
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