Newlands law of octaves was discarded because

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it failed to arrange larger elements beyond Potassium

it failed to arrange larger elements beyond Sodium.

it failed to arrange larger elements beyond Calcium.

it failed to arrange larger elements beyond Argon

answer is C.

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Detailed Solution

In the year 1964, Newland tried to arrange the then known 62 elements. He arranged them in an ascending order based on their atomic masses and observed that every 8th element had similar properties. This law of Newland was discarded as it did not hold true for elements larger than calcium.

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