Exam (elaborations)
GCSE CHEMISTRY Higher Tier Paper 1 JUNE 2019Tested Questions
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0 1 This question is about the periodic table. In the 19th century, some scientists tried to classify the elements by arranging them in order of their atomic weights. Figure 1 shows the periodic table Mendeleev produced in 1869. His periodic table was more widely accepted than previous versions . 1 The atomic weight of tellurium (Te) is 128 and that of iodine (I) is 127 Why did Mendeleev reverse the order of these two elements?
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GCSE CHEMISTRY
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GCSE CHEMISTRY
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- GCSE CHEMISTRY
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- April 5, 2024
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gcse chemistry higher tier paper 1
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1 the atomic weight of tellurium te is 128 and
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2 mendeleev left spaces marked with an asterisk
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this question is about the periodic table in the
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