Some Basic Concepts Of Chemistry Question 52
Question: Choose the incorrect formula out of the four compounds for an element X below:
Options:
A) $ X _2O _3 $
B) $ X _2Cl _3 $
C) $ X _2{{(SO _4)}_3} $
D) $ XPO _4 $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ X _2O _3\Rightarrow {X^{3+}}{O^{2-}} $
$ X _2Cl _3\Rightarrow {X^{3+}}C{l^{2-}} $
$ X _2{{(SO _4)}_3}\Rightarrow {X^{3+}}SO _4^{2-} $
$ XPO _4\Rightarrow {X^{3+}}PO _4^{3-} $ Because $ C{l^{2-}} $ does not exist. So, $ X _2Cl _3 $ is incorrect. The correct formula should be $ XCl _3. $
