which is an excited state configuration for a potassium atom? *\n1) 2 - 8 - 7 - 1\n2) 2 - 8 - 8 - 1\n3) 2…

which is an excited state configuration for a potassium atom? *\n1) 2 - 8 - 7 - 1\n2) 2 - 8 - 8 - 1\n3) 2 - 8 - 7 - 2\n4) 2 - 8 - 8

which is an excited state configuration for a potassium atom? *\n1) 2 - 8 - 7 - 1\n2) 2 - 8 - 8 - 1\n3) 2 - 8 - 7 - 2\n4) 2 - 8 - 8

Answer

Brief Explanations:

Potassium (K) has an atomic number of 19. Its ground - state electron configuration is 2 - 8 - 8 - 1. In an excited state, an electron moves to a higher - energy level. Option 3 has an extra electron in the outer shell compared to the ground - state and one less in the previous shell, indicating an excited state.

Answer:

  1. 2 - 8 - 7 - 2