Which will have the highest concentration of potassium ion: 0.20 m kcl, 0.15 m k2cro4, or 0.080 m k3po4?

To know which has the highest concentration or molarity of potassium ion, all we have to do is to calculate based on stoichiometry.

Concentration of potassium in KCl:

molarity K in KCl = (0.20 moles KCl / L) (1 mole K / 1 mole KCl) = 0.20 M

Concentration of potassium in K2CrO4:

molarity K in K2CrO4 = (0.15 moles K2CrO4 / L) (2 mole K / 1 mole K2CrO4) = 0.30 M

Concentration of potassium in K3PO4:

molarity K in K3PO4 = (0.08 moles K3PO4 / L) (3 mole K / 1 mole K3PO4) = 0.24 M

Therefore 0.15M K2CrO4 has the highest K ion concentration.

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.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.