Question 2 of 10 fique
Pressure (tm)
03
0.25
wanager
(as)
Temperaturer
What do the sections between the lines on a phase diagram represent?
O A The conditions in which a substance exists in a certain phase
OB. The regions in which temperature and pressure change a
substances phase
O C. The areas in which the kinetic energy of a substance is constant
D. The ranges where temperature and pressure are constant in a
substance

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.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.