Which fossil is the most effective?
fossil 1- 245-65 mya
fossil 2- 419-240 mya
fossil 3- 551-505 mya
fossil 4- 540-500 mya

The answer is solid copper 

This kind of reaction is called a synthesis otherwise known as combination reaction

Firstly, the planetary model of the atom  failed  to explain why individual atoms produce discrete  line spectra. in fact, according to rutherford's model, each individual atom should produce a  continuous  line spectrum. the second flaw to his model was the fact that electrons orbit the nucleus in a circular fashion.