The principal quantum number describes ____
energy and size of the orbit
the shape of the orbital
spatial orientation of the orbital
the spin of the electron
What is the shape the orbital, whose “l” is 1?
Spherical
Dumbbell
Double dumbbell
Complex
Which statement below is true with regard to Bohr's model of the atom?
The model accounted for the absorption spectra of atoms but not for the emission spectra.
The model could account for the emission spectrum of hydrogen and for the Rydberg equation
The model was based on the wave properties of the electron.
The model accounted for the emission spectra of atoms, but not for the absorption spectra.
The model was generally successful for all atoms to which it was applied.
What is the magnetic quantum number of the orbital 2pz?
1
±1
-1
0
Total number of nodes for 3d orbital is ________
3
2
1
0
Which of the following set of quantum numbers is not valid?
n = 5, l = 2, m = 0, s = 1/2
n = 1, l = 2, m = 0, s = 1/2
n = 5, l = 3, m = 2, s = 1/2
n = 5, l = 2, m = 0, s = -1/2
Radial wave functio ns (R) of different orbitals are plotted. Which is/are correct graphs?
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C
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According to the Aufbau’s principle, which of the following orbital should be filled first?
5d
4p
3p
2s
No two electrons have the same set of all four quantum numbers.
True
False
For 2s-orbital electron, radial probability density R2 as function of r (distance) is given by
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