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Questions and Answers
What is the main focus of the modern periodic table?
What is the main focus of the modern periodic table?
- The relationship between electron configurations and chemical properties (correct)
- The prediction of chemical behavior of undiscovered elements
- The arrangement of elements based on atomic weights
- The similarities between elements in the same column
Who proposed that elements could be grouped in triads based on similar properties?
Who proposed that elements could be grouped in triads based on similar properties?
- Lothar Meyer
- Dmitri Mendeleev
- Johannes Geber
- Johann Wolfgang Dobereiner (correct)
How did Dmitri Mendeleev arrange the elements in the periodic table?
How did Dmitri Mendeleev arrange the elements in the periodic table?
- Increasing order of atomic weights (correct)
- Alphabetically
- According to their melting points
- Based on electron configurations
What aspect of elements does periodicity refer to?
What aspect of elements does periodicity refer to?
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How did Lothar Meyer and Dmitri Mendeleev represent the properties of elements?
How did Lothar Meyer and Dmitri Mendeleev represent the properties of elements?
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What is the main purpose of the periodic table?
What is the main purpose of the periodic table?
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Why are noble gases generally unreactive?
Why are noble gases generally unreactive?
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Which element is an exception with a closed 1s shell that has only two electrons?
Which element is an exception with a closed 1s shell that has only two electrons?
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What do all elements prefer in terms of electron configuration?
What do all elements prefer in terms of electron configuration?
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Why do atoms in the same column of the periodic table tend to form compounds with similar oxidation states?
Why do atoms in the same column of the periodic table tend to form compounds with similar oxidation states?
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