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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
Which statements is/are incorrect
  • A
    In alkali metals in a group, from top to bottom increase in size is maximum from $Na$ to $K$
  • B
    Addition of $e^-$ in $P$ atom will be exothermic
  • C
    $IP$ of $F$ is greater than its $EA$ value.
  • ✓
    Reaction ${\bar O_{\left( g \right)}} + {S_{\left( g \right)}} \to {O_{\left( g \right)}} + {\bar S_{\left( g \right)}}$ is endothermic
✓

Answer

Correct option: D.
Reaction ${\bar O_{\left( g \right)}} + {S_{\left( g \right)}} \to {O_{\left( g \right)}} + {\bar S_{\left( g \right)}}$ is endothermic
d

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