The element with atomic number $17$ is placed in which group of the periodic table?

Match the following:

List-$I$ (Atomic number)	List-$II$ (Group number and Period number)
$A$. $56$	$I$. $9, 4$
$B$. $50$	$II$. $3, 6$
$C$. $27$	$III$. $14, 5$
$D$. $58$	$IV$. $2, 6$

The element with outer electronic configuration $(n-1)d^2 ns^2$,where $n=4$,would belong to

Where is helium placed in the periodic table and why?

Which among the following electronic configurations belong to main group elements?
$A. [Ne] 3s^1$
$B. [Ar] 3d^3 4s^2$
$C. [Kr] 4d^{10} 5s^2 5p^5$
$D. [Ar] 3d^{10} 4s^1$
$E. [Rn] 5f^0 6d^2 7s^2$
Choose the correct answer from the options given below:

The element with atomic number $12$ belongs to ......... group and ......... period.