Question

Choose the correct abbreviation of potassium (K) written in its noble gas configuration

[Ar]4s1
[Ar]3p64s1
[Ar]3p6
[Kr]5s1

Answer 1

[Ar]4s1

Step-by-step explanation:

its the right answer

Answer 2

Answer: [Ar]4s1

Explanation: Potassium
`(K)` 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
`(Ar)` which has 18 electrons with completely filled subshells.

`Ar:18:1s^22s^22p^63s^23p^63d^(10)`

`K:19:[Ar]4s^1`