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Some Basic Concepts of Chemistry
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12/08/2021 10:38 am
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Choose the incorrect formula out of the four compounds for an element X below:
(a) X2O3
(b) X2Cl3
(c) X2(SO4)3
(d) XPO4
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12/08/2021 10:45 am
Correct answer: (b) X2Cl3
Explanation:
X2O3 ⇒ X3+O2-
X2Cl3 ⇒ X3+Cl2-
X2(SO4)3 ⇒ X3+SO42-
XPO4 ⇒ X3+PO43-
Because Cl2- does not exist. So, X2Cl3 is incorrect. The correct formula should be XCl3.