Answer: 2.1 × 10^7 m/s
Explanation:
Please see the attachments below
An element with 83 protons has the atomic number 83. If you look at a periodic table you will see Bismuth is the element with the atomic number of 83. It will have a positive charge of +3 because it has only 80 electrons and 83protons. 83-80=+3.
Answer:
The net charge on the shell is 30x10^-9C
Explanation:
Pls see attached file