Early Development of Atomic Theory by norehan https://padlet.com/norehan1/sscp1223_202220232_W5 sscp1223(2): modern physics-2022/2023/2 en-us 2023-04-29 23:26:34 UTC 2023-05-09 00:34:00 UTC hello@padlet.com https://padlet.net/icons/png/1f52c.png Dalton's Atomic Theory norehan1 https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572734591 2023-04-29 23:35:25 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572734591 The Atomic Models of Thomson norehan1 https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572735027 2023-04-29 23:37:51 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572735027 Rutherford’s Atomic Model norehan1 https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572735489 2023-04-29 23:40:25 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572735489 The Classical Atomic Model norehan1 https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572735899 2023-04-29 23:42:02 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572735899 The Bohr Model of the Hydrogen Atom norehan1 https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572736321 2023-04-29 23:44:12 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572736321 Mayvin mayvin https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572768584 I would like to know more about Rutherford Scattering and the concept behind it ]]> 2023-04-30 02:23:51 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572768584 AFINA https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572768850 - more explanation of rutherford scattering ]]> 2023-04-30 02:25:14 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572768850 Monica https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572770252 -explaination regarding Bohr's general assumptions ]]> 2023-04-30 02:32:08 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572770252 AFINA https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572776250 - Dalton theory 
- Thompson atomic models and why need a new atomic model
- rutherford nak prove thompson punya models, tapi observe scattering of a particle past 90 degree. So Rutherford discover ada highly postive charge dekat tengah tengah atom.
- Rutherford tak boleh explain classical atomic model sebab planetary model is doomed 

]]> 2023-04-30 03:00:41 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2572776250 Mayvin mayvin https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2574377791 From Thompson's model, Rutherford decided to do an experiment whereby an alpha particle (He particle) is expected to be deflected by the scattered material which is a gold foil of one atom thick. According to Thomson model, Rutherford expected the electron to become deflected even if b=0

However, things start to deviate when  it is found that for small values of b, the angle of scattering is more than 180°. 

So therefore, Rutherford concluded that there is a high intensity of positive charge at the middle of the atom surrounded by electrons. Thus, the concept of the Rutherford model of the atom is born whereby the nucleus which contains the protons and neutrons is at the centre of the atom whereas it is surrounded by electrons orbiting around it. 

However, there is the doom of planetary model as classical physics States that the accelerating electron will release EM radiation which therefore reduces the total mechanical energy of the electron orbiting the nucleus. Therefore, the radius of the electron orbiting will decrease until the electron strikes the nucleus. 

The Bohr's model is then used to fix this planetary doom.
]]> 2023-05-02 00:55:10 UTC https://padlet.com/norehan1/sscp1223_202220232_W5/wish/2574377791