Question

(c) The formula of their oxides and chlorides.​

Answer 1

Answer:

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Explanation:

Whose oxides?

Say an element X of valency,

1. +1              X₂O                                                      XCl        

2. +2            XO    X₂O₂                                            XCl₂

3. +3            X₂O₃                                                     XCl3

Valency of O is -2 and that of Cl is -1