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Newlands' law of octaves stated that every:
AFifth element resembles the first
BSecond element resembles the first
CTenth element resembles the first
DEighth element resembles the first
Answer & Solution
Correct answer: D. Eighth element resembles the first
1. Newlands arranged elements in order of increasing atomic mass.
2. He found that every eighth element showed similar properties.
3. He drew an analogy to the octaves of music.
4. So the law of octaves repeats every eighth element.
_Source: NCERT Class 10 Science Ch 5 'Periodic Classification of Elements'_
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