an element has electronic configuration 2 8 1 and 12 neutrons it's mass no is
Answers
Answered by
7
Sodium is the answer with mass 23 and atomic number 11. Exact mass is 22.9898 u.
genious2000:
please mark it brainliest
Answered by
3
Sodium (Na) has the electronic configuration of 2 8 1. It's mass is = 29.9
its 22.9 not 29.9
22.9898
Similar questions