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For the properties mentioned, the correc...

For the properties mentioned, the correct trend for the different species is in

A

Strength as Lewis acid `-BCl _(3) gt Al Cl _(3) gt Ga Cl _(3)`

B

Inert pair effect `- Al gt Ga gt ln`

C

Oxidising property `- Al ^(3+) gt ln ^(3+) gt Ti ^(3+)`

D

First ionisaiton enthalpy `- B gt Al gt Ti`

Text Solution

Verified by Experts

The correct Answer is:
D
As we know on moving down the group first ionization enthalpy decreases top to bottom therefore order of first ionization enthalpy for group 13 element is
`B gt Al gt Ga gt In gt Tl`
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Knowledge Check

  • Select the correct order of periodic properties of species :

    A
    `Fe^(2+) lt Fe^(3+)` : Ionic radii
    B
    `N lt O` : Second I.E.
    C
    `Cu lt Zn` : Atomic radius
    D
    `ln lt Ti` : First I.E.

  • The incorrect arrangement regarding the properties of the given species is :

    A
    `Co^(3+) lt Fe^(3+) lt Cr^(3+) lt Sc^(3+) :` Stability in aqueous solution
    B
    `Sc lt Ti lt Cr lt Mn` : Number of oxidation states
    C
    `V^(2+) lt Cr^(2+) lt Mn^(2+) lt Fe^(2+)`: Paramagnetic behaviour
    D
    `Ni^(2+) lt Co^(2+) lt Fe^(2+) lt Mn^(2+)`, Ionic size

  • Which option does not represent the correct order of species, according to the properties given?

    A
    `NH _(3) lt PH _(3) lt As H _(3)` (Acidic nature)
    B
    `Li lt Be lt B lt C` (Ionisation energy)
    C
    `Al _(2) O _(3) lt Mg O lt Na _(2) O lt K _(2) O ` (Basic nature )
    D
    `Li ^(+) lt N a ^(+) lt K ^(+) lt Cs ^(+)` (Ionic radius)

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