Question

Atomic number of calcium is 20. No. of valence electrons is​

Answer 1

Answer:

atomic configuration of Calcium = ( 2,8,8,2)

so no. of valence electrons = 2

hope it will help you plz follow me and mark my answer as brailist

Answer 2

Answer:

2

Explanation:

Electron configuration of calcium is 2, 8, 8, 2.Therefore, 2 is the answer for valence electron.