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JEE Main 2022 (Online) 28th July Evening Shift
MCQ (More than One Correct Answer)
+4
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Which of the following pair is not isoelectronic species?
(At. no. Sm, 62; Er, 68; Yb, 70; Lu, 71; Eu, 63; Tb, 65; Tm, 69)
Questions Asked from d and f Block Elements (MCQ (Multiple Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
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