MCQ
Given below are two statements:

Statement- $I$: Along the period, the chemical reactivity of the element gradually increases from group $1$ to group $18$.

Statement - $II$: The nature of oxides formed by group $1$ element is basic while that of group $17$ elements is acidic.In the the light above statements, choose the most appropriate from the questions given below:

  • A
    Both statement $I$ and Statement $II$ are true.
  • B
    Statement $I$ is true but Statement $II$ is False.
  • Statement $I$ is false but Statement $II$ is true.
  • D
     Both Statement $I$ and Statement $II$ is false.

Answer

Correct option: C.
Statement $I$ is false but Statement $II$ is true.
c
Chemical reactivity of elements decreases along the period therefore statement $-\mathrm{I}$ is false.

$Group -1$ elements from basic nature oxides while group - $17$ elements form acidic oxides therefore statement $-\mathrm{II}$ is true.

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