Easy
The rule which states that an electron enters the sub-shell for which the $(n + l)$ value is minimum is known as:
- AHund's rule
- BAufbau principle
- CHeisenberg uncertainty principle
- DPauli's exclusion principle
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Between $4s$ and $3d$ orbitals,which one has higher energy and why?
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View SolutionWhat are the electronic configurations of elements with atomic numbers $Z = 117$ and $Z = 120$?
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View SolutionGiven,
$(A)$ $n=5, m_l=-1$
$(B)$ $n=3, l=2, m_l=-1, m_s=+\frac{1}{2}$
The maximum number of electron$(s)$ in an atom that can have the quantum numbers as given in $(A)$ and $(B)$ respectively are:
$(A)$ $n=5, m_l=-1$
$(B)$ $n=3, l=2, m_l=-1, m_s=+\frac{1}{2}$
The maximum number of electron$(s)$ in an atom that can have the quantum numbers as given in $(A)$ and $(B)$ respectively are:
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View SolutionPauli's exclusion principle states that
Medium
View SolutionTwo electrons $A$ and $B$ in an atom have the following set of quantum numbers:
$A: n=3, l=2, m_l=-2, m_s=+1/2$
$B: n=3, l=0, m_l=0, m_s=+1/2$
What is true for $A$ and $B$?
$A: n=3, l=2, m_l=-2, m_s=+1/2$
$B: n=3, l=0, m_l=0, m_s=+1/2$
What is true for $A$ and $B$?
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