Respuesta :
					                   [Ar] 4s² 
Let me know if you want a step by step!
Hope that helps
					                
					             Let me know if you want a step by step!
Hope that helps
Answer: Calcium ion Ca² : 1 s² 2s² 2p ^6 (sorry I don't get 6 similar way as 2) 3s² 3p^6
Also 18 electrons, because Calcium donates two 4s electrons
Explanation:
 
			                  