| Sections | |||
|---|---|---|---|
| Periodic Table | 28 mins | 0 completed | Learn |
| Mole Concept | 37 mins | 0 completed | Learn Summary |
| Isotopes | 12 mins | 0 completed | Learn Summary |
| Mass Spectrometry | 9 mins | 0 completed | Learn |
| Subatomic Particles | 8 mins | 0 completed | Learn |
| Atomic Theory | 16 mins | 0 completed | Learn |
| Thomson's Cathode Ray Tube Experiment | 8 mins | 0 completed | Learn |
| Oil Drop Experiment | 7 mins | 0 completed | Learn |
| The Chadwick Neutron Experiment | 6 mins | 0 completed | Learn |
| Gold Foil Experiment | 10 mins | 0 completed | Learn |
| End of Chapter 2 Problems | 28 mins | 0 completed | Learn |
| Additional Guides |
|---|
| Periodic Table Charges |
| Calculating Molar Mass |
| Calculating Grams to Moles |
How many protons, electrons and neutrons are there in the cation formed from an atom of magnesium that has a mass of 24?
(A) 12 protons, 12 electrons, 12 neutrons
(B) 12 protons, 10 electrons, 14 neutrons
(C) 12 protons, 10 electrons, 12 neutrons
(D) 14 protons, 12 electrons, 10 neutrons
(E) 10 protons, 12 electrons, 12 neutrons
Enter your friends' email addresses to invite them:
Join thousands of students and gain free access to 46 hours of Chemistry videos that follow the topics your textbook covers.