JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties
Outermost electronic configurations of four elements \(A, B, C, D\) are given below. \(3 s^{2}\); \(3 s^{2} 3 p^{1}\); \(3 s ^{2} 3 p ^{3}\); \(3 s^{2} 3 p^{4}\) The correct order of first ionization enthalpy for them is.
- A \((A) < (B) < (C) < (D)\)
- B \((B) < (A) < (D) < (C)\)
- C \(( B )<( D )<( A )<( C )\)
- D \(( B ) < ( A ) < ( C ) < (D)\)
Answer & Solution
Correct Answer
(B) \((B) < (A) < (D) < (C)\)
Step-by-step Solution
Detailed explanation
\(3 s ^{2} \rightarrow Mg\) \(3 s ^{2} 3 p ^{1} \rightarrow Al\) \(3 s ^{2} 3 p ^{3} \rightarrow P\) \(3 s ^{2} 3 p ^{4} \rightarrow S\) \(C > D > A > B\)
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