Easy
Which one of the statements regarding quantum numbers is false?
- AQuantum numbers were proposed out of necessity in the $Bohr$ model of the atom.
- BAzimuthal quantum number refers to the subshell to which an electron belongs and describes the motion of the electron.
- CThe principal quantum number alone can give the complete energy of an electron in any atom.
- DAll of the above
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Similar Questions
If the given four electronic configurations:
$(i)$ $n=4, l=1$
$(ii)$ $n=4, l=0$
$(iii)$ $n=3, l=2$
$(iv)$ $n=3, l=1$
are arranged in order of increasing energy, then the order will be:
$(i)$ $n=4, l=1$
$(ii)$ $n=4, l=0$
$(iii)$ $n=3, l=2$
$(iv)$ $n=3, l=1$
are arranged in order of increasing energy, then the order will be:
Write the electronic configuration of chromium $(Cr)$ and copper $(Cu)$. Give reasons for the observed configurations of $Cr$ $(Z = 24)$ and $Cu$ $(Z = 29)$.
Match the entries in Column $I$ with the correctly related quantum number$(s)$ in Column $II$.
Column $I$ Column $II$ $A$. Orbital angular momentum of the electron in a hydrogen-like atomic orbital $p$. Principal quantum number $B$. $A$ hydrogen-like one-electron wave function obeying Pauli principle $q$. Azimuthal quantum number $C$. Shape,size and orientation of hydrogen-like atomic orbitals $r$. Magnetic quantum number $D$. Probability density of electron at the nucleus in hydrogen-like atom $s$. Electron spin quantum number
| Column $I$ | Column $II$ |
| $A$. Orbital angular momentum of the electron in a hydrogen-like atomic orbital | $p$. Principal quantum number |
| $B$. $A$ hydrogen-like one-electron wave function obeying Pauli principle | $q$. Azimuthal quantum number |
| $C$. Shape,size and orientation of hydrogen-like atomic orbitals | $r$. Magnetic quantum number |
| $D$. Probability density of electron at the nucleus in hydrogen-like atom | $s$. Electron spin quantum number |
The radial part of the wave function is determined by which quantum numbers?
Difficult
View SolutionIf the nitrogen atom had electronic configuration $1s^7$,it would have energy lower than that of the normal ground state configuration $1s^2, 2s^2, 2p^3$ because the electrons would be closer to the nucleus. Yet,$1s^7$ is not observed because it violates:
Medium
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