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Inventions Exam Prep: Certification Test 644

Periodic Table Quiz App Download & PDF e-Book - 644

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MCQ: 644

Periodic table was patented by a Russian Chemist named as

  1. Dmitri Mendeleev
  2. Sir Henry W. Seelay
  3. Sir Schuyler Skaats Wheeler
  4. Sir Samuel W. Francis
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