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| 1. |
Stategivingclearexplanation whyargon(atomicweight= 39.9) has beenrightlyplacedbeforepotassium(atomicweight39.10 )in the periodictable. |
| Answer» SOLUTION :THISIS because ARGON(Z=18 )has loweratomicnumberthanpotassium(Z= 19) | |