2.1-2.7, 8.1-8.5 · Atoms, elements and the periodic tableLesson 2 of 12Free preview
Counting the neutrons in an atom
Arsenic-75 has 33 protons. Work out the neutrons before the steps show you.
2.1-2.7, 8.1-8.5 · Atoms, elements and the periodic tableLesson 2 of 12Free preview
Arsenic-75 has 33 protons. Work out the neutrons before the steps show you.