please answer these questions......
Answers
Answer:
13.a).protons
b). electrons
c). neutrons
14. a). rutherford selected helium atom because this very light atom with small atomic size
b). I) if heavy atom so they does not pass through the gold foil
ii) if light atom so they very easily pass through it.
15. Nucleus
16. Neutrons
17. because many of alpha particle pass through the gold foil.
18 rutherford was not able to understand that how the electron Continuosly move across the nucleus.
19. a) A
b) name. nucleus and charge. positive
Explanation:
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Answer:
13. (a) proton
(b) electron
(c) nuetron
14.(a) Gold, because it shines for a little shine.
14.(b) it would be not possible to scatter alpha particles.
15. proton.
16 nucleus.
17. because some alpha particles moved straight and scattered by behind foil.
18.it does not state that how electrons are revolving around nucleus.
19.(a) K,L and M. A shell.
(b) X - nucleus charge of X is positive because protons are there.
(c) orbitary model
20. Bohr stated that atoms contain orbits in which electrons revolve.
Orbits names are K,L,M,N
if electrons gain energy they jump into higher orbits and when they loose energy they jump into lower orbits.
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