What is the fubction of centrioles during metaphase

They line the chromosomes up along the middle on the cells, where they will then pull them apart during anaphase.

Ibelieve y y even though i've only taken chemistry for one year

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.