Question

CAN ANYONE HELP? lol
I just need to know how to do this:
When bismuth-212 undergoes alpha decay, it becomes which of the following?

Answer 1

@kevin7510

Answer 2

@ anyone

Answer 3

Bi has 83 protons and mass number given 212

Answer 4

if something undergoes alpha decay
mass number decreases by 4
proton number decreases by 2

Answer 5

ok and when the proton amount changes, the atomic number changes too right?

Answer 6

proton number is atomic number

Answer 7

\[ _{83}^{212}Bi \rightarrow _{81}^{208}Ti + _{2}^{4}He\]