Which of the following pair is not isoelectronic species? (At. no. Sm, 62; Er, 68: Yb…
Chemistry · JEE Main · NTA Exams — Atomic Structure
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) (JEE Main 2022)
(At. no. Sm, 62; Er, 68: Yb, 70: Lu, 71; Eu, 63: Tb, 65; Tm, 69) (JEE Main 2022)
- Sm2+ and Er+
- Yb2+ and Lu3+
- Eu2+ and Tb4+
- Tb2+ and Tm4+
Answer
(D) Tb 2+ and Tm 4+
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