The correct IUPAC name of the compound:

Show the direction of inductive effect in following compounds:

$\left(1\right)$   $\left(2\right)$ 

$\left(3\right)$ ${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2$        $\left(4\right)$ ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Li}$  

$\left(5\right)$ ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{MgBr}$     $\left(6\right)$ ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{OH}$

$\left(7\right)$    $\left(8\right)$   

 $\left(9\right)$    $\left(10\right)$