What is the electron figuration of selenium

What is the force of attraction between the particles in a salt crystal

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon