According to the reading, why do scientists want to understand the special characteristics of different kinds of matter? A) Most kinds of matter have special characteristics
B) Because the two basic characteristics of matter are shared by all matter in the universe
C) To help them understand what happens when different kinds of matter interact with each other
D) Because every kind of matter has a unique set of chemical and physical properties

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.

if you're asking what comes out, it's steam.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.