Effective charts and graphs include all of the following except

simple, meaningful, attractive design

accurate information

at least five different colors

clear presentation of information

At least five different colors

Explanation:

The most important things for effective charts and graphs first is to present a cleaer presentation of information, giving the information, giving the information to the audience in a simple, meaningful and attractive design can help the reader to better understand it and be more appealing to the eye, and having accurate information can help giving better understanding of the information presented.

mercury

explanation:

mercury is the least dense because of its size