2. How many electrons in boron-11?
11 5 6 10 None of these
3. When an element has a different number of neutrons, it is called a/an...
Anomaly Differentiated Mutated Isotope None of these
4. How many neutrons in carbon-13?
13 0 1 7 6
5. Which of these has a negative charge?
Protons Neutrons Electrons Quarks None of these
| about us | contact us
tutorials index | organic
chemistry | practice tests | online
quizzes | reference tools
site copyright (c) 2002 to neopages.com