Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Science Chemistry Periodic Table

Which of the following is the decreasing order of reducing strength of lanthanides ?

1
Sm2+ > Eu2+ > Yb2+
2
Eu2+ > Yb2+ > Sm2+
3
Sm2+ > Yb2+ > Eu2+
4
Eu2+ > Sm2+ > Yb2+
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