Mendeleev published his version of the periodic table in 1869 - VCE - SSCE Chemistry - Question 15 - 2003 - Paper 1
Question 15
Mendeleev published his version of the periodic table in 1869.
Which one of the following statements about Mendeleev's periodic table is not correct?
A. There were m... show full transcript
Worked Solution & Example Answer:Mendeleev published his version of the periodic table in 1869 - VCE - SSCE Chemistry - Question 15 - 2003 - Paper 1
Step 1
A. There were many gaps in the table.
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Answer
This statement is correct. Mendeleev's periodic table indeed had gaps where no known elements fit.
Step 2
B. Each element had an atomic weight greater than the one before it.
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Answer
This statement is NOT correct. Mendeleev arranged elements by increasing atomic weight, but there were exceptions where this rule did not hold.
Step 3
C. The table was used to predict the existence of some then unknown elements.
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Answer
This statement is correct. Mendeleev's table successfully predicted several unknown elements.
Step 4
D. The elements were arranged into vertical groups of elements with similar chemical properties.
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Answer
This statement is correct. Mendeleev grouped elements based on similar chemical properties.
