berifly explain Rutherford atomic modle
Answers
- Rutherford's model shows that an atom is mostly empty space, with electrons orbiting a fixed, positively charged nucleus in set, predictable paths. This model of an atom was developed by Ernest Rutherford, a New Zealand native working at the University of Manchester in England in the early 1900s.
Answer:
Explanation:
In his famous ‘α-ray Scattering Experiment’, Rutherford bombarded
α-ray (Helium nucleus 2He4) upon thin gold foil.
• Rutherford made following observations from this experiment :
(i) Most of α-particles passed through gold foil undeflected.
(ii) Some of the α-particles deflected by foil by small angles.
(iii) One out of every 12000 particles appeared to rebound.
From his observation, Rutherford draw following conclusions :
(i) Atom consists of predominantly empty space as most of
α-particles passed through gold foil undeflected.
(ii) Atom contains centrally placed positively charged nucleus
(carrying positively charged particles), because few α-particles
suffered deflected and very few i.e., one in 12000 bounced
back.
(iii) Since a minute fraction of α-particles suffered deflections and
very few bounced back, this lead to conclusion that most of
the space an atom is empty and the space occupied by nucleus
is negligible compared to this empty space.
Size of nucleus was about 10−5 times that of size of atom.
(iv) Whole of the atomic mass concentrated in the nucleus.