Answer:
[AR] 4s². EC(Ca)=1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
S=shell
²or⁶ is number of electrons
Explanation:
the number of electrons for the calcium atom is 20 show the first two electrons of calcium will go in the 1s² orbital. the next two electron will go in the 2s orbital and the next 6 electron will go in the 2p orbital.
