MCQ
Which is dobereiner's triad
- A$Ne, Ar, Fe$
- B$Li, Na, Rb$
- C$F, Cl, Br$
- ✓None

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$(I)\,[Kr]\,5s^1$ $(II)\, [Rn]\,5f^{14}\,6d^1\,7s^2$
$(III)\,[Ar]\,3d^{10}\,4s^2\,4p^5$ $(IV)\,[Ar]\,3d^6\,4s^2$
Consider the following Statements
$(i)\, I$ shows variable oxidation State
$(ii)\, II$ is a $d-block$ element
$(iii)$ The compound formed between $I$ and $III$ is covalent
$(iv)\,IV$ shows single oxidation state
Which Statement is True $(T)$ or False $(F)$?
Volume, Molar heat capacity, Molarity, $E ^\theta$ cell, Gibbs free energy change, Molar mass, Mole