Question

Two questions:
1. How many neutrons are in this isotope? 14/6C

a. 14
b. 6
c. 8
d. 20

2. Which particle is emitted when an atom of 230 90Th changes to 226 88Ra?

a. alpha particle

b. beta particle

c. gamma particle

d. positron

Answer 1

@dan815 @Luigi0210 @anitasonia98 can anyone help w these??

Answer 2

1. I'm assuming the first is talking about Carbon-14. 6 is the atomic number or the number of protons carbon has.
To get the number of neutrons, you do: 14 (the mass) - 6
The resulting number is the number of neutrons.

2. Again, Google might help with this. I'll give you a hint here: it's like a subtraction problem. What particle takes off 4 from the atomic mass and 2 protons? (I'll give you even more of an hint; it's one of the first two choices).