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Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region?
(a)Lyman series
(b)Balmer series
(c)Paschen series
(d)Brackett series

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Important Questions on Structure of Atom
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Magnesium reacts with an element to form an ionic compound. If the ground state electronic configuration of is , the simplest formula for this compound is

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Which one is a wrong statement?

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Which one of the following statements is wrong?

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How many electrons can fit in each orbital for which and ?

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Which of the following pairs of orbitals will have the electron density along the axis?

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Two electrons occupying the same orbital are distinguished by:

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The number of -electrons in is not equal to the number of electrons in which one of the following?

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The angular momentum of electron in -orbital is equal to
