How can you explain higher stability of $BCl_3$ as compared to $TlCl_3$ ?
How can you explain higher stability of $BCl_3$ as compared to $TlCl_3$ ?
Boron and thallium belong to group $13$ of the periodic table.
In this group, the $+1$ oxidation state becomes more stable on moving down the group. $\mathrm{BCl}_{3}$ is more stable than $\mathrm{TICl}_{3}$ because the $+3$ oxidation state of $\mathrm{B}$ is more stable than the $+3$ oxidation state of $\mathrm{Tl}$. In $\mathrm{Tl}$, the $+3$ state is highly oxidising and it reverts back to the more stable $+1$ state.
Similar Questions
Assertion : Boron is metalloid.
Reason : Boron shows metallic nature.
Assertion : Boron is metalloid.
Reason : Boron shows metallic nature.
- [AIIMS 1997]
In which of the following, a salt of the type $KMO_2$ is obtained?
In which of the following, a salt of the type $KMO_2$ is obtained?
Give reasons:
$(i)$ Conc. $HNO _{3}$ can be transported in aluminium container.
$(ii)$ $A$ mixture of dilute $NaOH$ and aluminium pieces is used to open drain.
$(iii)$ Graphite is used as lubricant.
$(iv)$ Diamond is used as an abrasive.
$(v)$ Aluminium alloys are used to make aircraft body.
$(vi)$ Aluminium utensils should not be kept in water overnight.
$(vii)$ Aluminium wire is used to make transmission cables.
Give reasons:
$(i)$ Conc. $HNO _{3}$ can be transported in aluminium container.
$(ii)$ $A$ mixture of dilute $NaOH$ and aluminium pieces is used to open drain.
$(iii)$ Graphite is used as lubricant.
$(iv)$ Diamond is used as an abrasive.
$(v)$ Aluminium alloys are used to make aircraft body.
$(vi)$ Aluminium utensils should not be kept in water overnight.
$(vii)$ Aluminium wire is used to make transmission cables.
The incorrect statement regarding $'X'$ in given reaction is $B{F_3} + LiAl{H_4}\xrightarrow{{Ether}}\left( X \right) + LiF + Al{F_3}$
The incorrect statement regarding $'X'$ in given reaction is $B{F_3} + LiAl{H_4}\xrightarrow{{Ether}}\left( X \right) + LiF + Al{F_3}$
The crystalline form of borax has
($A$) tetranuclear $\left[\mathrm{B}_4 \mathrm{O}_5(\mathrm{OH})_4\right]^{2-}$ unit
($B$) all boron atoms in the same plane
($C$) equal number of $s p^2$ and $s p^3$ hybridized boron atoms
($D$) one terminal hydroxide per boron atom
The crystalline form of borax has
($A$) tetranuclear $\left[\mathrm{B}_4 \mathrm{O}_5(\mathrm{OH})_4\right]^{2-}$ unit
($B$) all boron atoms in the same plane
($C$) equal number of $s p^2$ and $s p^3$ hybridized boron atoms
($D$) one terminal hydroxide per boron atom
- [IIT 2016]