MCQ
$[(C_6H_5)_2 Pd (SCN)_2]$ and $[(C_6H_5)_2 Pd (NCS)_2]$ are :
- ✓Linkage isomers
- BCo-ordination isomers
- CIonisation isomers
- DGeometrical isomers
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$(I)\,\,La(OH)_3$ is the least basic among hydroxides of lanthanides.
$(II) \,\,Zr^{4+}$ and $Hf^{4+}$ posses almost the same ionic radii.
$(III)\,\,Ce^{4+}$ can as an oxidizing agent
Which of the above is/are true ?
$\left[ Ag \left( H _{2} O \right)_{2}\right]\left[ Ag ( CN )_{2}\right]$ is :
Correct order of $pK _{ a }$ value is:


Reason : The reaction between nitrogen and oxygen requires high temperature.