WebClass 12 D and F Block Elements Important Questions with Answers Short Answer Type Questions Q 1. Why does copper not replace hydrogen from acids? An sw er: Copper does not replace hydrogen from acids because Cu has a positive E∘ value, i.e., it is less reactive than hydrogen, which has an electrode potential of 0.0 V. So, Cu cannot replace ... WebJun 27, 2024 · July 5, 2024. Class 11 & 12 p-block elements Physics wallah notes pdf download. June 27, 2024. Class 12 Electrochemistry Chemistry notes physics wallah notes pdf download. October 9, 2024.
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d And f Block Elements in One Shot - YouTube
Web(ii) The presence of valence electrons and unpaired d-orbital electrons aids in the formation of metallic bonds in heavy transition metals. (iii) Since Mn2+has a half-filled (3d5) d-orbital,it is stable. As a result, it does not oxidise. However, Fe2+ has a 3d6configuration and can lose one electronto achieve a stable d5configuration. As a ... Web8 rows · Apr 26, 2024 · Class 12 Chemistry NCERT Solutions for Chapter 8 d and f Block Elements. Chapter 8 d- and ... WebApr 22, 2024 · The d block of the periodic table is made up of elements from groups 3 - 12.The d orbital of the d-block elements is filled in four periods. The transition metals are divided into three series: 3d from Sc to Zn, 4d from Y to Cd, and 5d from La to Hg. The fourth 6dseries begins with Ac and is currently unfinished. cool foam mattress bed