How can the valency of an element be determined if its electronic configuration is known? Determ... VIDEO
How can the valency of an element be determined if its electronic configuration is known? Determine the valency of an element with atomic number 9 ?https://bit.ly/YTAI_PWAP https://www.pw.live
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\begin{tabular}{|c|c|c|}
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\begin{tabular}{|c|c|c|}
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