So I'm somewhat confused about the solubility of Sodium Chloride. For Potassium Chloride, we know that it absorbs a lot of heat as it absorbs, which causes an endothermic reaction and its solubility curve to be a concave up curve. BUT, I thought that Sodium Chloride was a very good heat absorber too, so why does it have a relatively flat solubility curve where a rise in temperature does very little to the solubility?

I guess my real question is: What is the correlation between solubility curves and heat absorption?

the increase of protons   hope this

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.