The element sulfur (s) is most likely to form covalent bonds with the element helium (he). magnesium (mg). zinc (zn). oxygen (o).

The answer would be : with the element oxygen (o).

Hope this helps !

Photon

The element that is mostly likely to form covalent   bonds with Sulfur  is   Oxygen ( O)

Explanation

  Covalent bond is bond that involves the sharing of  electrons  pairs  between atoms.   Mostly  a covalent bond is formed when  two non metals  react. for example  when S  react with O2 to form SO2  a covalent  bond is formed since each oxygen atom share two  valence electrons with sulfur.Helium is inert therefore it  does not react with Sulfur.Magnesium and Zinc are metal and react with sulfur to form an ionic bond.

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic