Engineering
Chemistry
The Boron Family and Properties New
Question
Electronegativity of group 13 elements follow the order :
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Solution
Electronegativity depends on :-
size of atom decreases electronegativity increases
Magnitude of nuclear charge increases electronegativity increases.
But due to inert pain effect
we see a increases in electronegativity from Aluminium to gallium to indium to thallium.
Values are (approx.)
Boron –
Aluminium – 1.5
Gallium – 1.6
Indium – 1.7
Thallium – 1.8
correct order is.