1.

Elements AtomicNumberEdlectronicCongligurationSodium (Na)chlorine (6)Bromine (BrAluminium CAI​

Answer»

Atomic no Electronic configurationsodium = 11. GROUP -1 , PERIODS -3chlorine =17. group - 17 , periods -2bromine =35. group - 17, periods -4aluminium=13. group-13, periods - 3



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