JEE Main202522 Jan 2025Evening ShiftChemistryd and f Block ElementsActual

Niobium ( Nb ) and ruthenium ( Ru ) have " x " and " y " number of electrons in their respective 4 d orbitals. The value of x+y is ______ -.

Correct answer

Step-by-step solution

aligned & Z =41 Nb (Niobium) : [ Kr ]₃₆ 4 ~d ^4 5 ~s ^1 & Number of electron in 4 ~d =4= x & Z =44 Ru (Ruthenium) [ Kr ]₃₆ 4 ~d ^7 5 ~s ^1 & Number of electron in 4 ~d =7= y & x + y =11 aligned

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