an atom of silicon has a mass number of 28 and an atomic number of 14. how many protons and how many neutrons are in this atom? show your calculation.

Silicon has 14 protons and it should have at least 12 neutrons

The atomic number is the number of protons so silicon has 14 protons.

The mass number is the sum of the number of protons and the number of neutrons. This means that the number of neutrons is the mass number minus the atomic number. So it is 28 - 14 which is 14.

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