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Interpretation: To determine if the element loses electrons or gains while forming its ion.
Concept introduction: An ion is formed by losing or gaining one or more electrons which helps them to attain a stable noble gas configuration.
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Answer to Problem 3STP
Option (E)
Iodine − gains one electron
Explanation of Solution
An ion is generated by the loss or gain of one or more electrons depending on the configuration of the element.
The number of electrons in the outermost shell, i.e., the valence shell of an element helps to determine if the element needs to lose or gain electrons.
A stable ion is one that has a complete octet or duplet in its outermost shell.
In the case of iodine, the
So, the electrons in the valence shell are 7 and thus, the element gains one electron to attain stability.
Chapter 7 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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