What is the abbreviated electron configuration of 19K?*1 pointOption 1Option 2Option 3Option 4

The abbreviated electron configuration of 19K (Potassium) is [Ar] 4s¹.

Here's the step by step process:

1. Find the atomic number of the element. For Potassium (K), the atomic number is 19.

2. Write down the electron configuration for the element. The electron configuration of Potassium is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹.

3. Identify the noble gas that comes before the element. For Potassium, the noble gas that comes before it on the periodic table is Argon (Ar).

4. Replace the electron configuration of the noble gas in the electron configuration of the element. The electron configuration of Argon is 1s² 2s² 2p⁶ 3s² 3p⁶.

5. The abbreviated electron configuration of Potassium is then [Ar] 4s¹.