Question

please answer it..............................​

Answer 1

Answer:

na is 11

cl is 17 and ar is 18

2,8,1

2,8,7

2,8,8

electronegativity increase from left to right in a period

Answer 2

Answer:

Na=11(2,8,1) Cl=17(2,8,7) and Ar=18(2,8,8)

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