Solution, in chemistry, a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of The s stands for single, as in single bond It means the double bonds are cis or trans to each other based around the single bond It is a common enough expression Hund's rule states that Every orbital in a sublevel is singly occupied before any orbital is doubly occupied All of the electrons in singly occupied orbitals have
Definition Of Orbital Nodes Chemistry Dictionary