Q.

A second period element (E) shows a sudden jump between 5th and 6th ionization potential values. Formula of its chloride is

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a

ECl3

b

ECl4

c

ECl5

d

ECl2

answer is A.

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Detailed Solution

Sudden jump in 6th IP value indicates its valency is five.Formula of its chloride must be ECl5 but a second period element cannot show pentavalency.Thus the formula is ECl3.
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