4.Rayon is different from synthetic fibres because :
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When a monovalent cation X binds to a divalent anion Y, a compound with the formula would be formed.
A monovalent cation is an atom that has lost an electron. Hence, such cation has a single positive charge. A monovalent cation X will, thus, be
A divalent anion is an atom that has gained two electrons. Such anion has 2 negative charge. Thus, divalent Y would be
Since Y is a divalent anion, it requires 2 electrons in order to successfully bind with another charged atom, a cation to be specific. Thus, two of would be required to successfully bind
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More on the chemical formula can be found here: brainly.com/question/16741890
