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What were the undiscovered elements

Which inference can be made from the fact that Mendeleev left empty spaces in his periodic table?(1 point)ResponsesHe assumed
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After he finished his work, Mendeleev predicted _____.the atomic numbers of all the known elements the discovery of the
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2. asked by Bleaktuber
3. 942 views
What conclusion was drawn from the discovery that Gallium and eka-aluminum were the same element?A. Mendeleev’s periodic table
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2. asked by e
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What were the undiscovered elements of Mendeleev's periodic table?
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2. asked by Maddie
3. 869 views
Read this sentence from paragraph 5. While much of the treasure has been found, more than half of the riches remain scattered
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Notice what this chart has to say about discovered and undiscovered species (click the button below to view the chart).Hide
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2. asked by cesat
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Are these two answers correct? They are both true or false.Mendeleev was able to predict undiscovered elements. True The noble
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2. asked by Cheryl
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Which statement best explains why the elements in Group 18 do not have electronegativity values?A. The elements have only one
1. 1 answer
2. 78 views
Find the number of elements in A1∪A2∪A3, supposing that there are103 elements in A1, 992 elements in A2, 10011 elements in
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2. asked by Connor
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Which statement best explains why the elements in Group 18 do not have electronegativity values?(1 point) The elements do not
1. 1 answer
2. 90 views