question 7 (1 point)\nwhat is the highest energy level (valence shell) an electron will occupy in ca?\n a…

question 7 (1 point)\nwhat is the highest energy level (valence shell) an electron will occupy in ca?\n a 4s^1\n b 4p^2\n c 4p^1\n d 4s^2

question 7 (1 point)\nwhat is the highest energy level (valence shell) an electron will occupy in ca?\n a 4s^1\n b 4p^2\n c 4p^1\n d 4s^2

Answer

Brief Explanations:

Calcium (Ca) has an atomic number of 20. Its electron - configuration is 1s²2s²2p⁶3s²3p⁶4s². The outermost shell (valence shell) is the 4th energy level, and the electrons in the valence shell are in the 4s orbital with 2 electrons.

Answer:

D. 4s²