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Question
Elements have been arranged in the following sequence on the basis of their increasing atomic masses.
| F, | Na, | Mg, | Al, | Si, | P, | S, | Cl, | Ar, | K |
- Pick two sets of elements which have similar properties.
- The given sequence represents which law of classification of elements?
Solution
- Sodium, magnesium aluminium and potassium are all metals while fluorine, phosphorus, sulphur, chlorine and argon are all non-metals.
- The given sequence represents Mendeleev's law of periodicity.
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