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Elements A, B, C, D, E, F, G, H, I, J an...

Elements A, B, C, D, E, F, G, H, I, J and have atomic masses 13, 3, 97, 25, 7, 35, 9, 30, 50, and 19 respectively. According to law of octaves, which elements would have similar properties? Explain.

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According to Newlands. law of octaves, when elements are arranged in increasing order of atomic masses, every 8th element has similar properties as those of the 1st element, Given elements arranged in increasing order of atomic masses:

Elements that have similar properties are the Ist and 8th, 2nd and 9th, and 3rd and 10th, i.e. B-F, E-I, and G-C.
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