. Which of the following statements is incorrect about the structure of an atom? i. The whole mass of an atom is concentrated in the nucleus ii. The atom is an indivisible particle iii. The atom as a whole is neutral iv. All the atoms are stable in their basic state
1 point
(a) (i) and (iii)
(b) only (ii)
(c) (ii) and (iv)
(d) none of these
Answers
Answer:
d is correct answer
Explanation:
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Answer:
The correct option is B.
Explanation:
Atoms are divisible and they can be divided into neutrons protons and electrons. J.J Thomson who described an atom as a Christmas pudding said that an atom is a sphere of positive charge in which the electrons are embedded. But his observations failed when the results were experimentally tested.
Later rutherford performed alpha particles scattering experiment in which he passed alpha particles through the gold sheet. He then concluded that an atom is composed of a solid, dense positive nucleus in which neutrons and protons are present and electrons orbit around it.
Hence option b is incorrect because all other given options are correct.