- All the metals of group 1 react with water, liberating hydrogen gas and forming metal hydroxides. Suppose you are provided with a piece of metal stored in a bottle labelled as

‘Rubidium’. Based on your knowledge of the periodic table explain why it is not safe to

dispose it in sink with water?

since it is in grp 1, it will react with water like all other metals.

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.

gold is my favorite solid.