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D and F Block Elements question

2021 · 25 Jul · Shift 2 · Q18
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D and F Block Elements question

2021 · 25 Jul · Shift 2 · Q18

JEE MainChemistryD and F Block ElementsNumerical+4 / −1
Number of electrons present in 4f orbital of Ho3+Ho^{3+}Ho3+ ion is ‾\underline{\hspace{2cm}}​. (Given Atomic No. of Ho = 67)
Numerical answer
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