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Which of the following elements is the l...

Which of the following elements is the least electronegative?

A

`S`

B

`Cl`

C

`Br`

D

`Se`

Text Solution

Verified by Experts

The correct Answer is:
D
For the respesentative elements, electro0negativity values ussually increase from left to right across periods (because of decrease of atomic size on account of increase of `Z_(eff))` and decrease from top to bottom within groups (because of increase of atomic size on account of increase in the number of shells). Thus, the order of increasing electronegativity is
`Se lt S lt Br lt CI`
`{:(2.4,2.5,2.8,3.0,):}`
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Knowledge Check

  • Which of the following elements is the most electronegative?

    A
    Carbon
    B
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    C
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  • Which of the following elements has the lowest electronegativity?

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    B
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    D
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  • Which of the following element has highest electronegativity?

    A
    Fluorine
    B
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    C
    Chlorine
    D
    Oxygen

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