What determines the number of possible sublevels?
a.
the principal energy level
b.
the shape of the orbital
c.
the energy of the orbital
d.
the ground state

Hello!

The answer is A.   the principal energy level

Why?

The principal energy level or principal quantum number n, tell us about the position of an determined electron in the energy levels relative to the greater average distance of an electron from the nucleus, the larger the value of n and the higher its energy.

The principal energy levels contains n sublevels, orbitals and electrons.

For example, the number 1, has one orbital which is contained in a energy sublevel, its called s orbital, and it's just an orbital with 2 electrons.

Have a nice day!

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.

  concave means having an outline or surface that curves inward like the interior of a circle or sphere. so the mirror curves inward.