7 10 points
Sodium-24 has a half-life of approximately 15 hours. If only one eighth of the sodium-24 remains, about how much time has passed?

Hi + naoh -> h2o + nal

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.

Answertemperature