The lanthanoid that does NOT show +4 oxidation state is :
Solution
Europium (Eu)
<br>Atomic No = 63
<br>Electronic configuration = [Xe]4f<sup>7</sup>6s<sup>2</sup>
<br>Can show only + 2 and + 3 oxidation state.
About this question
Subject: Chemistry · Chapter: d and f Block Elements · Topic: Properties of Transition Metals
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