The Periodic Table Quiz
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5 questions, one answer each
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1. What basis did Mendeleev use to arrange his periodic table?
- A. Atomic number only
- B. Properties of elements and compounds
- C. Alphabetical order
- D. Electron shell number only
2. What is a vertical column of the periodic table called?
- A. A period
- B. A group
- C. A shell
- D. A series
3. How are elements ordered in the modern periodic table?
- A. By increasing relative atomic mass
- B. By increasing atomic number
- C. By discovery date
- D. By melting point
4. An element has electronic configuration 2.8.6. Which group is it in?
- A. Group 2
- B. Group 6
- C. Group 8
- D. Group 3
5. Why did Mendeleev's ordering by atomic mass sometimes place elements in the 'wrong' order compared to atomic number?
- A. He made arithmetic errors
- B. Relative isotope abundance affected atomic mass for some element pairs
- C. He didn't know about protons
- D. He ignored chemical properties entirely