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Recent questions and answers in Class XI Chemistry
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An atomic orbital has n = 3. What are the possible values of l and ml
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May 28
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Class XI Chemistry
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Give the number of electrons in the species
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An atom of an element contains 29 electrons and 35 neutrons. Deduce
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An electron is in one of the 3d orbitals.
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What is the lowest value of n that allows g orbitals to exist?
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Write the electronic configurations of the following ions
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Which of the following are isoelectronic species i.e., those having the same number of electrons
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The mass of an electron is 9.1 × 10–31 kg. If its K.E. is 3.0 × 10–25 J, calculate its wavelength.
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Calculate the wavelength of an electron moving with a velocity of 2.05 × 107 ms–1.
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The electron energy in hydrogen atom is given by En = (–2.18 × 10–18)/n2 J.
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Apr 20
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Class XI Chemistry
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What is the energy in joules, required to shift the electron of the hydrogen atom from the first Bohr orbit
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Calculate the wave number for the longest wavelength transition in the Balmer series of atomic hydrogen.
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The energy associated with the first orbit in the hydrogen atom is –2.18 × 10–18 J atom–1
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What is the maximum number of emission lines when the excited electron of an H atom
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How much energy is required to ionise a H atom if the electron occupies n = 5 orbit
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What is the wavelength of light emitted when the electron in a hydrogen atom
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Electrons are emitted with zero velocity from a metal surface
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A 25 watt bulb emits monochromatic yellow light of wavelength of 0.57μm
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Electromagnetic radiation of wavelength 242 nm is just sufficient to ionise the sodium atom
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A photon of wavelength 4 × 10–7 m strikes on metal surface, the work function of
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