Chemistry
Answer
I-
Reason — Cl, Br and I belong to the same group (group 17) and between the three, I is the bottom most. As atomic size increases down the group hence, between Cl, Br and I, I has the largest atomic size. Between I and I-, atomic size of I- is larger as anion is larger than the parent atom. Hence, I- has the largest atomic size in the given elements.
Related Questions
The given table shows elements with same number of electrons in its valence shell.
Elements A B C m.p. 63.0 180.0 97.0 State :
(i) Whether these elements belong to same group or period.
(ii) Arrange them in order of increasing metallic character.
Which one of the following has the largest atomic radius ?
- Sodium
- Potassium
- Magnesium
- Aluminium
The metals of group 2 from top to bottom are Be, Mg, Ca, Sr, and Ba
(i) Which one of these elements will form ions most readily and why ?
(ii) State the common feature in their electronic configuration.