आँखों के तारे' शीर्षक कविता में कवि ने सूरज न कहकर बाल अरुण के
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mdmsnmdmdlrmnenamsks
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For finding valency let's first write there electronic configuration. N = 2, 5. So valency = 8-5 = 3. Cl = 2, 8 , 7.
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