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Question

2 .Many monatomic ions are found in seawater, including the ions formed from the following list of elements. Write the Lewis symbols for the monatomic ions formed from the following elements:

(a) K

(b) Mg

(c) Sr

(d) Br

(e) F

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Answer 1 · 2018-06-23T03:09:19

Here's what I get.

(a) $K$ $"K"$

$K$ $"K"$ is in Group 1. It has one valence electron, so its Lewis structure is $K\cdot$ $"K·"$

(b) $Mg$ $"Mg"$

$Mg$ $"Mg"$ is in Group 2. It has two valence electrons, so its Lewis structure is $Mg:$ $"Mg:"$

(c) $Sr$ $"Sr"$

$Sr$ $"Sr"$ is in Group 2. It has two valence electrons, so its Lewis structure is $Sr:$ $"Sr:"$

(d) $Br$ $"Br"$

$Br$ $"Br"$ is in Group 17. It has seven valence electrons, so its Lewis structure is

![http://sci-culture.com/advancedpoll/GCSE/lewis%20diagrams.html]( useruploads.socratic.org )

(e) $F$ $"F"$

$F$ $"F"$ is in Group 17. It has seven valence electrons, so its Lewis structure is

![http://elektronik.us](https://useruploads.socratic.org/ODq32PdZRPS9M1ECHs1K_lewis-dot-diagram-for-fluorine-splendid-shape.png)