Determine the polarity of the ammonium ion ($\text{NH}_4^+$). Understand how perfect tetrahedral symmetry cancels bond dipoles, resulting in a nonpolar species.
Discover the true extent of the groundhog's habitat, from its geographic boundaries across North America to the hidden, intricate design of its dwelling.
Learn how Himalayan salt is mined. We detail its geological formation, the structurally protective extraction technique, and how raw blocks are processed for use.