MCQ
Correct order of Atomic radius
- A$Be > Li > B > C$
- B$N > O > C > B$
- C$P > Si > Mg > Na$
- ✓$I > P > S > Cl$
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$A$. All the transition metals except scandium form $MO$ oxides which are ionic.
$B$. The highest oxidation number corresponding to the group number in transition metal oxides is attained in $Sc _2 O _3$ to $Mn _2 O _7$.
$C$. Basic character increases from $V _2 O _3$ to $V _2 O _4$ to $V _2 O _5$.
$D$. $V _2 O _4$ dissolves in acids to give $VO _4^{3-}$ salts.
$E$. $CrO$ is basic but $Cr _2 O _3$ is amphoteric.
Choose the correct answer from the options given below:
$({K_c} = 1.8 \times {10^{ - 6}}\,{\rm{at}}\,\,184\,^\circ C)$
$(R = 0.0831\,kJ/\,(mol.\,K))$
When ${K_p}$ and ${K_c}$ are compared at $184\,^oC$ it is found that