Question

If A represents atomic mass and Z represents atomic number, which of the following describes an atom after a proton is emitted from its nucleus?

A. A+ 1, Z + 1

B. A-1,Z-1

C. A+ 1, Z-1

D. A-1, Z + 1

My answer is B

Answer 1

yes
charge goes down
mass goes down

Answer 2

Thank you.