Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: Carbon (atomic number 6) has six electrons. Four of them fill the 1s and 2s orbitals. The remaining two electrons occupy the 2p subshell. We now have a choice of filling one of the 2p orbitals and pairing the electrons or of leaving the electrons unpaired in two different, but degenerate, p orbitals. The orbitals are filled as described by Hund’s rule: the lowest-energy configuration for an atom with electrons within a set of degenerate orbitals is that having the maximum number of unpaired electrons. Thus, the two electrons in the carbon 2p orbitals have identical n, l, and ms quantum numbers and differ in their ml quantum number (in accord with the Pauli exclusion principle). The electron configuration and orbital diagram for carbon are:. Answer: orbitals
[EX A]: Subshells are subdivisions of what groupings of electrons that can be found surrounding atoms?

[EX Q]: Passage: Sliding friction is friction that acts on objects when they are sliding over a surface. Sliding friction is weaker than static friction. That’s why it’s easier to slide a piece of furniture over the floor after you start it moving than it is to get it moving in the first place. Sliding friction can be useful. For example, you use sliding friction when you write with a pencil. The pencil “lead” slides easily over the paper, but there’s just enough friction between the pencil and paper to leave a mark. Answer: sliding friction
[EX A]: What type of friction is friction that acts on objects when they are sliding over a surface?

[EX Q]: Passage: Stars spend most of their lives on the main sequence, fusing hydrogen into helium. Answer: helium
[EX A]:
Stars spend most of their lives on the main sequence, fusing hydrogen into what?

