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MHT CET Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesMHT CET

The element having electronic configuration [Xe] 4fMissing superscript or subscript argument^14

5dMissing superscript or subscript argument^10

6s 6p is

Answer: (D)

Solution

Atomic number = 54 + 14 + 10 + 2 + 5 = 85, which is astatine; F, Cl and Br have Z = 9, 17 and 35. Hence the correct option is (d).

Question ID VK-070918