How would you explain the lower atomic radius of $Ga$ as compared to $Al$ ?
How would you explain the lower atomic radius of $Ga$ as compared to $Al$ ?
Although $Ga$ has one shell more than $\mathrm{Al}$, its size is lesser than $\mathrm{Al}$. This is because of the poor shielding effect of the $3 d$-electrons. The shielding effect of $d$-electrons is very poor and the effective nuclear charge experienced by the valence electrons in gallium is much more than it is in the case of $\mathrm{Al}$.
Similar Questions
$(i)\,Al\,\xrightarrow{{{N_2}}}\,A$ $(ii)\,Al\,\xrightarrow{c}\,B$
Here $A$ and $B$ on hydrolysis respectively gives
$(i)\,Al\,\xrightarrow{{{N_2}}}\,A$ $(ii)\,Al\,\xrightarrow{c}\,B$
Here $A$ and $B$ on hydrolysis respectively gives
The liquefied metal which expands on solidification is
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- [AIIMS 2016]
Hydrated $AlC{l_3}$ is used as
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The correct order of atomic radii in group $13$ elements is
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- [NEET 2018]
The correct statement$(s)$ for orthoboric acid is/are
$(A)$ It behaves as a weak acid in water due to self ionization.
$(B)$ Acidity of its aqueous solution increases upon addition of ethylene glycol.
$(C)$ It has a three dimensional structure due to hydrogen bonding.
$(D)$ It is weak electrolyte in water.
The correct statement$(s)$ for orthoboric acid is/are
$(A)$ It behaves as a weak acid in water due to self ionization.
$(B)$ Acidity of its aqueous solution increases upon addition of ethylene glycol.
$(C)$ It has a three dimensional structure due to hydrogen bonding.
$(D)$ It is weak electrolyte in water.
- [IIT 2014]