Question

What is the electron configuration for a calcium atom? 01s². 2s 2.2p5.3s 2.3p 5.4s¹ 02s², 2s ², 2p5.3s 2.3p 6,4s1 01s 2. 2s 2. 2p5.3s 2.3p 5, 452 Ots1,2s2, 2p5.3s 2.3p5,4s¹​

Answer 1

Ca = 1s²2s²2p⁶3s²3p⁶4s²

Step-by-step explanation:

Calcium is located in the second column and the 4th row of the periodic table. Thus, there are 2 valence electrons and the highest quantum number is 4. This is represented by 4s². However, all of the previous orbitals and electrons must be listed beforehand, making the entire electron configuration: 1s²2s²2p⁶3s²3p⁶4s².