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The charge/size ratio of a cation determines its. polarizing power. Which one of the following sequences respresents the increasing order of the polarizing power of the cationic species ,`K^(+), Ca^(2+), Mg^(2+), Ba^(2+)`?A. `Ca^(2+) lt Mg^(2+) lt Be^(2+) lt K^(+)`B. `Mg^(2+) lt Be^(2+) lt K^(+) lt Ca^(2+)`C. `Be^(2+) lt K^(+) lt Ca^(2+) lt Mg^(2+)`D. `K^(+) lt Ca^(2+) lt Mg ^(2+) lt Be^(2+)` |
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Answer» Correct Answer - D The polarizing power increases when charge/size ratio of cation increases which in turn increases as the charge increases and size decreases , i.e., `K^(+) lt Ca^(2+) lt Mg^(2+) lt Be^(2+)` . |
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