Question

This question is about the periodic table. In 1841 John Newlands suggested an arrangement of the elements. Figure 1 shows the arrangement Newlands suggested. Give 2 differences between the groupings in Figure 1 compared with the modern periodic table.

Answer 1

Answer:

Group 8

Explanation:

There is no group eight where lithium suppose to continue from.

Answer 2

Answer:

1. In this picture the Newlands has arranged them in order in increasing atomic mass order but he doesn't recognised  that the elements having same properties are placed in the different groups but it doesn't observed in Modern periodic table .
2. Newland has placed the two elements of different atomic mass in a single slot , whereas in the Modern periodic table they havr the different place .

Explanation:

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