Which of the following pairs are not miscible? Group of answer choices hexane, C6H14 and water benzene, C6H6 and hexane, C6H14 ethyl alcohol, CH3CH2OH and water methyl alcohol, CH3OH and water pentane, C5H12 and hexane, C6H14

Hexane, C6H14, and water.

Explanation:

The highly polar group molecules are completely soluble in water because of the polar nature of water. Only the polar compounds or molecules can dissolve in water because poles of polar molecules attract by the poles which are present on water molecules.

Hexane is known as a pure hydrocarbon and non-polar in nature so, it does not have the ability to fulfill requirements of hydrogen bonds that why Hexane is immiscible in water.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

the answer is c i believe