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The maximum bond angle in hydrides of gr...

The maximum bond angle in hydrides of group 16 elements is in

A

`H_2O`

B

`H_2S`

C

`H_2 Te`

D

`H_2Se`

Text Solution

Verified by Experts

The correct Answer is:
A
As we move down the group, the bond angles decrease due to decrease in bond pair-bond pair repulsion.
`{:(,H_2O,H_2S,H_2Se,H_2Te),("Bond Angle",104^@5',92.2^@,91^@,90^@):}`
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Explain the following observations giving appropriate reasons : The HEH bond angle of the hydrides of Group 15 elements decreases as we move down the group.

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Knowledge Check

  • The H-M-H bond angle in the hydrides of group 16 elements decreases in the order

    A
    `H_(2)O gt H_(2)S gt H_(2)Se gt H_(2)Te`
    B
    `H_(2)Te gt H_(2)Se gt H_(2)S gt H_(2)O`
    C
    `H_(2)S gt H_(2)O gt H_(2)Se gt H_(2)Te`
    D
    `H_(2)Te gt H_(2)S gt H_(2)Se gt H_(2)O`

  • The basic strength of the hydrides of group 15 elements :

    A
    decreases on moving down the group
    B
    increases on moving down the group
    C
    first decreases upto `AsH_(3)` and then increases
    D
    first increases upto `AsH_(3)` and then decreases

  • The increasing order of volatility of hydrides of group 16 elements is -

    A
    `H_(2) O lt H_(2) Te lt H_(2) Se lt H_(2)S`
    B
    `H_(2)S lt H_(2)O lt H_(2)Se lt H_(2)Te`
    C
    `H_(2)O lt H_(2) S lt H_(2)Se lt H_(2)Te`
    D
    `H_(2)Te lt H_(2)Se lt H_(2)S lt H_(2)O`

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    Thermal stability of hydrides of group 16 elements decreases down the group. Why ?

    Which of the following hydrides of group 16 elements has the highest boiling point ?

    Thermal stability of hydrides of group 16 elements decreases in the following order

    The stability of the hydrides of group 15 elements follows the order

    The order of thermal stability of hydrides of group 16 elements is?

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