When filling degenerate orbitals, electrons fill them singly first, with parallel spins refers to as <u>Hund's rule</u>.
Hund's rule describes that the electrons are filled single first in each orbital with the same spin; and only after that, the electrons are paired with another electron within the same orbital. It means that before the double occupation of any orbital, the single occupation of every orbit in the sublevel happens.
The given statement defines Hund's rule as the lowest energy configuration for a particular atom that has the maximum number of parallel spins in the degenerate orbitals. In a subshell, all the degenerate orbitals are singly occupied with one electron before they are doubly occupied.
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The reasons cited by the textbook for high voter turnout—58.7% in the 2012 presidential election—include all of the following EXCEPT higher turnout among baby boomers.
Explanation:
The reasons cited by the textbook for high voter turnout—58.7% in the 2012 presidential election—include a higher number of Latino turnout, a higher number of African American turnout, and higher number of turnout among the population of people who were under 30 years old.
When the earth faces the sun during its rotation, the energy from the sun gives us light and heat. When the earth faces away from the sun it becomes dark and we see the moon in the sky.