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JEE Main 2025 (Online) 22nd January Evening Shift
Fill in the Blanks
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Niobium $(\mathrm{Nb})$ and ruthenium $(\mathrm{Ru})$ have " $x$ " and " $y$ " number of electrons in their respective 4 d orbitals. The value of $x+y$ is __________.
Questions Asked from d and f Block Elements (Fill in the Blanks)
Number in Brackets after Paper Indicates No. of Questions
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