Answers: 1
is an element with atomic number 19, thus it contains 19 electrons. It is a metal which readily loses its electrons to acquire stable configuration of Argon 
which has 18 electrons with completely filled subshells.
![K:19:[Ar]4s^1](/tpl/images/0010/2531/fb39f.png)
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Choose the correct abbreviation of potassium (k) written in its noble gas configuration [ar]4s1 [ar]...
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