JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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The probability of finding the electron in the orbital is

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Correct option: B

90-95%

Option B (90-95%) is correct because the probability of finding an electron within the defined space of an orbital is conventionally accepted to be within this range.

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n^{\text {th }}

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\mathrm{A}

\times 10^{12}

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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: