First slide

Atomic and physical properties

Question

Statement I : Al is highly electro positive metal in IIIA group
Statement II : ‘Al’ has lowest negative S.R.P in IIIA group

Moderate

A

Both Statements are true
B

Statement I is true Statement II is false
C

Statement I is false and Statement II is true
D

Both Statements are false

Solution

Electronegativity order : B > Tl > In > Ga > Al
Electropositivity order : B < Tl < In < Ga < Al
Electropositivity order $\propto$ Metallic nature
$E.N\alpha S.R.P\$
$E.P\,\alpha \frac{1}{{SRP}}$

Reduction potential : Reduction potential is a measure of tendency to gain of electrons.
More the positive reduction potential means more easy of gaining of electrons and more the electronegativity of that element [non metal].
But "Al" is metal and hence it has high oxidation potential value and has low reduction potential value, means it has highest negative value.

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