A compound, C8H10O2, has an 1H NMR spectrum showing peaks at delta 2.6 (1 H, singlet), 3.8 (3 H, singlet), 4.5 (2 H, singlet), 6.8 (2 H, doublet), and 7.2 (2 H, doublet). Draw its structure in the window below. a. You do not have to consider stereochemistry. b. You do not have to explicitly draw H atoms. c. Do not include lone pairs in your answer. They will not be considered in the grading. d. In cases where there is more than one answer, just draw one.

attached below

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.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.