Salts dissolve in water. look at the image of the water cycle. hypothesize as to the original source of the salts in the oceans on earth. a) water collecting on earth chemically erodes the continental crust. b) elements found within the earth, dissolve in water, enter the water cycle, and return to the oceans. c) elements in the atmosphere fall back to earth when combined with water in some form of precipitation. d) evaporation leaves behind salts that eventually combine with the water that covers the oceanic plates.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

po-215 i got it right on the quiz