Match List-I with List-II: List-I List-II A. [ He ] 2 s ^2 2 p ^6 I. Transition element B. [ Ar ] 3 d ^8 4 s ^2 II. Inner transition element C. [ Rn ] 5 f ^7 6 d ^1 7 s ^2 III. Representative element D. [ Ne ] 3 s ^2 3 p ^1 IV. Noble gas Ch

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Match List-I with List-II: List-I List-II A. [ He ] 2 s ^2 2 p ^6 I. Transition element B. [ Ar ] 3 d ^8 4 s ^2 II. Inner transition element C. [ Rn ] 5 f ^7 6 d ^1 7 s ^2 III. Representative element D. [ Ne ] 3 s ^2 3 p ^1 IV. Noble gas Choose the correct answer from the options given below:

Quantrex Academy · Accepted Answer

Correct answer: D. A-IV, B-I, C-II, D-III

A. [ He ] 2 s ^2 2 p ^6 : The valence shell is completely filled ( n s ^2 n p ^6 ). It is a noble gas (IV). B. [ Ar ] 3 d ^8 4 s ^2 : The last electron enters the 3 d subshell. Elements with incompletely filled d-orbitals are transition elements (I). C. [ Rn ] 5 f ^7 6 d ^1 7 s ^2 : The last electron enters the 5 f subshell. These are inner transition elements (II). D. [ Ne ] 3 s ^2 3 p ^1 : The last electron enters the 3 p subshell. The s and p-block elements are known as representative elements (III). Therefore,

Match List-I with List-II: List-I List-II A. [ He ] 2 s ^2 2 p ^6 I. Transition element B. [ Ar ] 3 d ^8 4 s ^2 II. Inner transition element C. [ Rn ] 5 f ^7 6 d ^1 7 s ^2 III. Representative element D. [ Ne ] 3 s ^2 3 p ^1 IV. Noble gas Choose the correct answer from the options given below:

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