What contribution did Newlands make to the systematic arrangement of the elements known to him?
- Leaving Cert Chemistry - Question 1(e) - 2006
Question 1(e)
What contribution did Newlands make to the systematic arrangement of the elements known to him?
Worked Solution & Example Answer:What contribution did Newlands make to the systematic arrangement of the elements known to him?
- Leaving Cert Chemistry - Question 1(e) - 2006
Step 1
Identified periodicity of properties
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Answer
Newlands identified the periodicity of properties among the elements. He recognized that the properties of elements are related to their atomic mass.
Step 2
Arranged in increasing relative atomic mass
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Answer
He arranged the known elements in order of increasing relative atomic mass, which was a significant step towards a systematic arrangement.
Step 3
In his law of octaves
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Answer
Newlands proposed the 'law of octaves', stating that every eighth element exhibited similar properties. This concept led to a more organized classification of elements.
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