In el ectrons cooler shell 4 number Of • 10 • ■ of nit electrons In Outer anon 4 /61,4646 2- 2 0 10i o o . 2 4 6 1:4460.1 4 1 n u m be r 1 0 C 10 - at number ot Or electrons I n outer anon 4 • 10 number elnannent 0 6 1 4 4 shell 2 • 0 0 1 0 Proton n u m b e r 0 of In 4 2 0 2 4 0 0 1 0 proton number 0 2 • 0 0 proton number 10