Whats does the elements li (lithium),b (boron, and ne neon) have in common?

You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen

Compare and contrast physical changes with chemical changes.

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering