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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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The orbital angular momentum of an electron in the 3d-orbital is

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Correct option: B

\sqrt 6 \frac{h}{{2\pi }}

Option B (

\sqrt 6 \frac{h}{{2\pi }}

) is correct because it is calculated using the formula for orbital angular momentum, which depends on the azimuthal quantum number (l).

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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 }}

Bohr's orbit of the hydrogen atom is The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency '

\mathrm{A}

\times 10^{12}

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watt per steradian. 'A' and 'B' are respectively Quantum number which defines the orientation of orbital present in a subshell is Maximum number of electrons associated with

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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: