The energy needed to overcome intermolecular forces is called
a. sensible heat
b. latent heat
c. specific heat

vaporization. process by which thermal energy can overcome intermolecular forces and produce a state change from liquid to gas, the higher the temperature the greater the average energy of collection of molecules, ENDOTHERMIC

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.

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg