2.1-2.7, 8.1-8.5 · Atoms, elements and the periodic tableLesson 1 of 12Free preview
What the proton number decides
Predict the outer shell of aluminium, then separate proton number from element.
2.1-2.7, 8.1-8.5 · Atoms, elements and the periodic tableLesson 1 of 12Free preview
Predict the outer shell of aluminium, then separate proton number from element.