First slide

Atomic and physical properties

Question

MX₃ of elements of 13th group are

Easy

A

covalent halides
B

in aqueous medium gives ${[M (OH)_{4}]}^{-} and {[M {(H_{2} O)}_{6}]}^{3 +}$ except boron
C

In monomeric form, they act as Lewis acids
D

all of the above

Solution

13th group halides are covalent nature ,they acts as Lewis acids and in aqueous medium gives ${[M (OH)_{4}]}^{-} and {[M {(H_{2} O)}_{6}]}^{3 +}$ except boron

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