arrange the following elements in increasing order of their valency : phosphorous,helium,carbon,sodium,magnesium
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Answer:
helium < carbon < sodium < magnesium < phosphorus
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helium valency is 0, carbon valancy is 4, sodium valency is 1, magnisium valency is 2 and phosphorus valency is 3
Explanation: he<Na<mg<p<C
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