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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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The radiation having maximum wavelength is

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Correct option: B

Radio waves

Option B (Radio waves) is correct because radio waves have the longest wavelength compared to UV rays, X-rays, and IR rays.

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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: