What the effect of temperature on molarity, molality
,normality ? explain.

Explanation:

Molality is the number of moles present in kilogram of solution. Mathematically, expression for molality is as follows.

      Molality =  

As we increase the temperature of a solution then there occurs no change in its mass as well as no change in its number of moles. As a result, there will occur no change in molality of the solution.

Molarity is the number of moles present in liter of solution. So, with change in temperature there occurs change in volume of the solution. Hence, molarity will also change.  

Normality is no. of gram equivalents per liter of solution. As normality is also dependent on volume and when there occurs a change in temperature then volume of solution also changes. As a result, normality will also change with change in temperature.

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.

the correct answer would be d. hope this !