4. Look at the differences in the pk, values between adjacent members of the two series of compounds above. Which of the following are reasonable take-away messages? the trends are clear, but the change in acidity over the two series is small. the trends are clear and the change in acidity over the two series is enormous. • adjacent atoms in the second row of the periodic table (C, N, O, F) are not so different from one another. ⚫ adjacent atoms in the second row of the periodic table (C, N, O, F) are markedly different from one another. ⚫the different versions of the carbon atom (sp³, sp², sp) are not so different from one another. ⚫ the different versions of the carbon atom (sp³, sp², sp) are markedly different from one another. • a good knowledge of pk, values will enable you to earn the admiration of people you meet at parties. • a good knowledge of pk, values will enhance your ability to understand many organic reactions and increase your chances of acing Chem 2401.