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JEE Main Chemistry question

ChemistryStructure of AtomJEE Main

A certain negative ion has in its nucleus 18 neutrons, and 18 electrons in its extra-nuclear structure. What is the mass number of the most abundant isotope of ?

Answer: (C)

Solution

Since has 18 electrons and carries a charge, the neutral atom has protons, identifying as sulphur. The given ion itself is a particular isotope

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Question ID VK-132503