Refer to Exercise 21.21. Figure E21.22 shows the bonding of cytosine and guanine. The O€”H and H€”N distances are each 0.110 nm. In this case, assume that the bonding is due only to the forces along the O€”H€”O, N€”H€”N, and O€”H€”N combinations, and assume also that these three combinations are parallel to each other. Calculate the net force that cytosine exerts on guanine due to the preceding three combinations. Is this force attractive or repulsive?

Figure E21.22

Transcribed Image Text:

(H) 0.280 н Н) Adenine H) N) Thymine H) 0.300 (H. nm H) N) (н)