Figure 1 shows an outline of the modern periodic table. J, L, M, Q and R represent elements in the periodic table. (f) In the 1860s scientists were trying to organise elements. Figure 2 shows the table published by John Newlands in 1865. The elements are arranged in order of their atomic weights.- 6030

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Figure 1 shows an outline of the modern periodic table.

J, L, M, Q and R represent elements in the periodic table.

(f) In the 1860s scientists were trying to organise elements.

Figure 2 shows the table published by John Newlands in 1865.

The elements are arranged in order of their atomic weights.

Figure 3 shows the periodic table published by Dmitri Mendeleev in 1869.

Mendeleev’s table became accepted by other scientists whereas Newlands’ table was not.

Evaluate Newlands’ and Mendeleev’s tables.

You should include:

• a comparison of the tables

• reasons why Mendeleev’s table was more acceptable.

Use Figure 2 and Figure 3 and your own knowledge.

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