How many valence electrons do the following elements have? Potassium
Calcium
Xenon
Nitrogen

Why are the trends and exceptions to the trends in ionization energy observed?

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean

How can one make a supersaturated solution? (apex)