Question

Fill in the blanks.

Answer 1

hm, lets see

A is : Carbon-11 or 11 C is a radioactive isotope of carbon that decays to boron-11. This decay mainly occurs due to positron emission ; however, around 0.19–0.23% of the time, it is a result of electron capture

that's the only one I'm familiar with

(answer by google)

Answer 2

Answer:

B & B

Explanation:

The decay of carbon-11 results in boron-11. The atomic number changes from 6 to 5 with no change in its mass number. So a proton is changed into a neutron. First answer is B.

The decay emits a "positron" - a positively charged electron. So the second answer is also B.