JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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The incorrect statement according to Dalton's Atomic theory is

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Correct option: A

Atoms can be created in a chemical reaction

Option A (Atoms can be created in a chemical reaction) is correct because Dalton's atomic theory states that atoms are indivisible and cannot be created or destroyed in a chemical reaction.

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Which of the following is paramagnetic? The time taken by the electron in one complete revolution in the

n^{\text {th }}

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\mathrm{A}

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in magnesium atom is The nucleus and an atom can be assumed to be spherical. The radius of the nucleus of mass no. A is given by

1.25 \times {10^{ - 13}} \times {A^{1/3}}\mathrm{cm}.

. The atomic radius of atom is 1 Å. If the mass no. is 64, the fraction of the atomic volume that is occupied by nucleus is: