MCQ
The $IUPAC$ name of${(C{H_3})_2}CH - C{H_2} - C{H_2}Br$ is
- A$1-$ bromo pentane
- B$2-$ methyl and $4$ bromo butane
- ✓$1-$ bromo and $3-$ methyl butane
- D$2-$ methyl and $3$ bromo propane
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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:
$A : 1s^2\, 2s^2\, 2p^6$
$B : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^3$
$C : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^5$