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nucleus TEST Try Practice Problems 4.79 to 4.94 esent PRACTICE PROBLEMS 1.8 Trends in Periodic Properties 4.71 Write the grou
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The number of valence electrons of an atom equals to it's group number.

4.7) a) 252 + 2 or 11A or 2 A b) 35² 3p3 → is or VA or 5A c) 452305 + 7 or VIIB or 7B d) ss? 4do sp4 + 16 or via or 6A 4IL L4.74 a) halogene - b) Group 6A (16) ► c) Group is ons? mp5 ns2 not onsamp d) Alkaline earth metals ns² 4.75 a) Aluminium + va

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