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An element forms an oxide A2 O5. What is the valency of the element A. What will be the formula of the chloride of the element Please Help Me |
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Answer» :-→ VALENCY of element A = +5→ Formula of chloride of 'A' = ACl₅Explanation :-Formula of a compound is given A₂O₅ .We know that, while writing formula of a compound, valencies of the cation and the anion are criss CROSSED .Since the valency of Oxygen is -2 (anion), so valency of the element 'A' will be = +5 .______________________________Now, we need to WRITE the formula of Chloride of element A . Here, A is cation and chlorine is anion .• Valency of A = +5• Valency of Chlorine (Cl) = -1The required formula by crossing valencies will be :-= A₁Cl₅= ACl₅Some Extra Information :-The valencies of some other important elements are :-→ Hydrogen (H) = +1→ Carbon (C) = 4→ Sodium (Na) = +1→ Aluminium (AL) = +3 |
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