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The isoelectronic pair is:

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Important Questions on Structure of Atom

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 22
Maximum number of electrons that can be accommodated in the subshell with azimuthal quantum number l=4, is:
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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 23

The electronic configuration which obeys Hund's rule for the ground state of carbon atom is:

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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 24
Among the following, the INCORRECT statement is
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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 25
The energy of hydrogen atom in its ground state is -13.6 eV. The energy of the level corresponding to n=5 is:
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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 26
The total number of lines in the Lyman series of H spectrum will be: (where n= number of orbits)
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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 27
The wavelength of a spectral line for an electronic transition is inversely proportional to:
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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 28
Which of the following ions has the maximum number of unpaired d-electrons?
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Chemistry Crash Course NEET>Chapter 2 - Structure of Atom>Level 1>Q 29
The uncertainty in the momentum of an electron is 1.0×10-5 kg m s-1. The uncertainty in its position will be:h=6.626×10-34 Js