Questions and Answers
How many electrons can the first energy level hold?
2
Which group includes elements with full outer energy levels?
Group 0
In Mendeleev's periodic table, how were elements arranged?
By atomic weight
What did Mendeleev do if elements didn't fit the patterns in his table?
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How did Mendeleev account for undiscovered elements in his periodic table?
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How did Mendeleev predict the properties of undiscovered elements?
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What is the key difference between Mendeleev's periodic table and the modern periodic table?
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What guided Mendeleev in placing elements in his periodic table?
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What is a common feature among elements in Group 0?
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Why is Mendeleev's prediction of undiscovered elements considered significant?
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