What is the difference between Beryllium and Iodine?

Beryllium (Be) is a group 2 metal - alkali earth metal. Be has 2 electrons in it's 1 s orbital and 2 in it's 2 s orbital. Alkali earth metals generally react by giving away their valence electrons. read more

Fluorine, chlorine, bromine and iodine all occur as diatomic gasses or solid. I is a fairly large atom and very polarizable. Iodine is a crystalline solid and it sublimates quite easily. Depending on what it's dissolved in its purple (organic solvents) or brown (water). Iodine is a fantastic leaving group and great for metal coupling reactions. read more