Question

an element presented as x x and its isobar is 15 and 31 write the electronic configuration number of proton and number.​

Answer 1

Answer: isobar has same number of atomic mass but different atomic number

phosphorus atomic no. 15. its electronic configuration is 2, 8, 5

It has 15 proton because atomic mass is equals to proton and electron

31 electronic configuration is 2,8, 18,3