JEE Mains · Chemistry · STD 11 - 2. structure of atom
Consider the hypothetical situation where the azimuthal quantum number, \(l\), takes values \(0\) , \(1,2, \ldots \ldots n+1,\) where \(n\) is the principal quantum number. Then, the element with atomic number
- A \(13\) has a half\(-\)filled valence subshell
- B \(9\) is the first alkali metal
- C \(8\) is the first noble gas
- D \(6\) has a \(2 p-\) valence subshell
Answer & Solution
Correct Answer
(A) \(13\) has a half\(-\)filled valence subshell
Step-by-step Solution
Detailed explanation
\(l=0\) to \(( n +1)\) \(n =1 \quad n =2\) \(l=0,1,2 \quad l=0,1,2,3\) \((n+l) \Rightarrow \frac{1 s}{1} \frac{1 p}{2} \frac{1 d}{3} \quad \frac{2 s}{2} \frac{2 p}{3} \frac{2 d}{4} \frac{2 f}{5}\) \(n=3\) \(l=0,1,2,3,4\)…
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