First slide

Atomic and physical properties

Question

Wrong match about electronegativity on pauling scale is

Easy

A

Be = Al
B

Al > Tl
C

C > Pb
D

Si = Ge

Solution

Electronegativity trend (13th group) . . . B > Tl > In > Ga > Al
Electronegativity trend (14th group) . . . C > Pb > Si = Ge = Sn = Pb.

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