All of them are a source of getting energy but solar and wind energy are a more beneficial way of producing the energy we need.
The halogens are five non-metallic elements found in group 17 of the periodic table. The term "halogen" means "salt-former" and compounds containing halogens are called "salts". All halogens have 7 electrons in their outer shells, giving them an oxidation number of -1.
Quantitative is a description in numbers , and qualitative is a description with words
D. The particles are tightly packed together
The element that has the fewest valence electrons available for bonding I believe is Hydrogen.
