The addition of metals like $Cr,\,Mn,\,W$ and $Ni$ to ordinary steel makes it
The addition of metals like $Cr,\,Mn,\,W$ and $Ni$ to ordinary steel makes it
- A
More useful
- B
Alters the properties of ordinary steel
- C
Both $ (a)$ and $ (b)$
- D
None of these
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- [AIIMS 2010]
In the following members of transition elements, the lowest ionization energy is of
In the following members of transition elements, the lowest ionization energy is of
The magnetic moments of following,arranged in decreasing order will be :-
$(i)$ $Co^{3+}$ (Octahedral complex with a strong field ligand)
$(ii)$ $Co^{3+}$ (Octahedral complex with a weak field ligand like $F^-$ )
$(iii)$ $Co^{2+}$ (Tetrahedral complex)
$(iv)$ $Co^{2+}$ (Square planar complex)
The magnetic moments of following,arranged in decreasing order will be :-
$(i)$ $Co^{3+}$ (Octahedral complex with a strong field ligand)
$(ii)$ $Co^{3+}$ (Octahedral complex with a weak field ligand like $F^-$ )
$(iii)$ $Co^{2+}$ (Tetrahedral complex)
$(iv)$ $Co^{2+}$ (Square planar complex)
$(a)$ Transition metals can act as catalysts because these can change their oxidation state. How does $Fe(III)$ catalyse the reaction between iodide and persulphate ions ?
$(b)$ Mention any three processes where transition metals act as catalysts.
$(a)$ Transition metals can act as catalysts because these can change their oxidation state. How does $Fe(III)$ catalyse the reaction between iodide and persulphate ions ?
$(b)$ Mention any three processes where transition metals act as catalysts.