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MHT CET Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesMHT CET

Which of the following represent noble gas configurations? [BHU 1995]

Answer: (A)

Solution

Option (a) is the configuration of Xe (closed 5s5p shell); (b) and (c) are La (Missing close brace\mathrm{5d^1$

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Question ID VK-071408