Which of the following statements regarding solutions and the is not correct?
a. in dilute solutions, the experimental van' t hoff factor for a molecule is always greater than 1.
b. nonideal behavior can occur in solutions containing ions when the ions do not behave as independent particles in solution.
c. as concentrations increase, the probability of ion pairing increases.
d. theoretical van 't hoff factors often predict colligative properties of solutions with concentrations of about 0.01 m or less.
e. the deviation from ideal behavior generally increases as the charge on dissolved ions
f. increases.

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.

you need to stop taking that class