Chemistry-
General
Easy
Question
The orbital angular momentum for an electron revolving in an orbit is given by 
This moment us for an s-electron will be given by-
- zero
The correct answer is: zero
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An atom of Cr[Z=24] loses 2electrons. How many unparied electrons shall be there inCr+2
An atom of Cr[Z=24] loses 2electrons. How many unparied electrons shall be there inCr+2
chemistry-General
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Which one of the following electron transitions between energy level in the hydrogen atom produces the line of shortest wavelength in hydrogen spectrum?
Which one of the following electron transitions between energy level in the hydrogen atom produces the line of shortest wavelength in hydrogen spectrum?
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The wavelgth of radiation emitted when and electron in a hydrogen atom makes a transition from an energy level within=3 to a level with n= 2 is :[Given that En =
kJmol-1 ]
The wavelgth of radiation emitted when and electron in a hydrogen atom makes a transition from an energy level within=3 to a level with n= 2 is :[Given that En = kJmol-1 ]
chemistry-General
chemistry-
Which of the following has maximum number of unpaired electrons:
Which of the following has maximum number of unpaired electrons:
chemistry-General
chemistry-
Which of the following pairs is correctly matched
Which of the following pairs is correctly matched
chemistry-General
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Electronic configuration:1s2,2s22p6,3s23p6 3d54s1represents
Electronic configuration:1s2,2s22p6,3s23p6 3d54s1represents
chemistry-General
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Correct statement is:
Correct statement is:
chemistry-General
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Which of the following are isoelectronic NO3,CO3 ,ClO3,SO3:
Which of the following are isoelectronic NO3,CO3 ,ClO3,SO3:
chemistry-General
chemistry-
The de-Broglie wavelength of a tennis ball of mass 60g moving with a velocity of 10metres per second is approximately:
The de-Broglie wavelength of a tennis ball of mass 60g moving with a velocity of 10metres per second is approximately:
chemistry-General
chemistry-
Wavelength of some radiation is500nm.What is it wave number
Wavelength of some radiation is500nm.What is it wave number
chemistry-General
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In Bohr atomic model radius of Ist orbit of Hydrogenis0.053nmthenradiusof 3rdorbitof Li+2 is:
In Bohr atomic model radius of Ist orbit of Hydrogenis0.053nmthenradiusof 3rdorbitof Li+2 is:
chemistry-General
chemistry-
Which of the following pair is not isoelectronic:
Which of the following pair is not isoelectronic:
chemistry-General
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What is the de-Broglies wavelength associated with the hydrogen electron in its third orbit:
What is the de-Broglies wavelength associated with the hydrogen electron in its third orbit:
chemistry-General
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The configuration 1s2,2s2,2p5,3s1 shows:
The configuration 1s2,2s2,2p5,3s1 shows:
chemistry-General
chemistry-
The emission spectrum of hydrogen is found to satisfy the expression for the energy change.ΔE(in joules) such that ΔE=2.18× 10–18 
Where n1=1,2,3.....and n2=2,3,4 ......The spectral lines that correspond to Paschan series have:
The emission spectrum of hydrogen is found to satisfy the expression for the energy change.ΔE(in joules) such that ΔE=2.18× 10–18
Where n1=1,2,3.....and n2=2,3,4 ......The spectral lines that correspond to Paschan series have:
chemistry-General
