Transition elements are sometimes described as transition metals due to their metallic nature. Important: Two exceptions are Chromium and Copper. Cr electron configuration is [Ar]3d54s1 and not [Ar]3d44s2. Cu electron configuration is [Ar]3d104s1 and not [Ar]3d94s2. Characteristics of Transition Elements: Variable oxidation states Can have oxidation states ranging from +1 … Continue reading 13.1 First-row d-block elements

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