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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Consider the following four elements, which are represented according to long form of periodic table.

Here $W, Y$ and $Z$ are left, up and right elements with respect to the element $'X'$  and $'X'$ belongs to $16^{th}$ group and $3^{rd}$ period. Then according to given  information the incorrect statement regarding given elements is

  • A
    Maximum electronegativity $: Y$
  • B
    Maximum catenation property $: X$
  • C
    Maximum electron affinity $: Z$
  • ✓
    $Y$ exhibits variable covalency
✓

Answer

Correct option: D.
$Y$ exhibits variable covalency
d
$(d)$ $W :$ Phosphorus      $Y :$ Oxygen     $X :$ Sulphur     $Z :$ Chlorine
Electronegativity :  $O > Cl > S > P$    Catenation:        $S > P > O > Cl$
Electron Affinity :    $Cl > O > S > P$    Oxygen exhibits  covalency of two only

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