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p-Block Elements - I
easy
તમે $Al$ ની સરખામણીમાં $Ga$ ની ઓછી પરમાણ્વીય ત્રિજ્યા કેવી રીતે સમજાવશો?
Option A
Option B
Option C
Option D
Solution
| Atomic radius (in $pm$) | |
| Aluminium | $143$ |
| Gallium | $135$ |
Although $Ga$ has one shell more than $A l$ its size is lesser than $A l$ . 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 $Al$
Standard 11
Chemistry
