2. Which of these has 23 protons?
Scandium Titanium Vanadium Chromium None of these
3. Which of these is not an element?
Uranium Plutonium Iron Gold Brass
4. Which of these can an element have a different number of?
Protons Neutrons Electrons All of these None of these
5. When an element has a different number of neutrons, it is called a/an...
Anomaly Differentiated Mutated Isotope None of these
| about us | contact us
tutorials index | organic
chemistry | practice tests | online
quizzes | reference tools
site copyright (c) 2002 to neopages.com