Which statement about the relationship between density and particle attraction is true? a. the density of a substance has no effect on the attraction among its particles. b. as the density of a substance increases, the attraction among its particles increases. c. as the density of a substance increases, the attraction among its particles decreases. d. as the density of a substance decreases, the attraction among its particles increases.

As the density of a substance increases, the attraction among its particles increases.

Explanation:

Density of the substance is defined as mass present in per unit volume of the substance.

From the above expression , we can say that density varies inversely with the volume of the substance.

Decrease in volume means particles are coming closer that is attraction between particles is getting increased by which they will now occupy less volume. And with decrease in volume the density of the substance will get increase.

Hence, the correct answer is option (B)

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

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.