JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

What is the name of element with atomic number 105? [WB-JEE 2006]

Answer: (B)

Solution

Element 105 was temporarily named Unnilpentium under IUPAC systematic nomenclature and later officially named Dubnium (Db). Kurchatovium was a rival (Soviet) name for

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Question ID VK-133075