Which of the following liquids will havethe lowest freezing point?

a. pureH2O
b. aqueous FeI3 (0.030 m)
c. aqueous glucose (0.050 m)
d. aqueous NaI (0.030 m)
e. aqueous CoI2 (0.030 m)

The liquid which ever releases the greatest number of particles  will have the lowest freezing point.

A) pure H2O  

B) Aqueous FeI3 (0.030m) releases 4X's = 0.120 mol/litre ions

C) aqueous glucose (0.050m) releases 0.050 moles/litre glucoes

D) aqueous NaI (0.030m) releases 2X's = 0.060 mol/ litre ions

E) aqueous CoI2 (0.030m) releases 3 X's = 0.090 mol/litre ions

The answer is  

B) Aqueous FeI3 (0.030m)

quartz

explanation:

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.