Effects of radiation

1

Which type of radiation is positively charged?

2

What determines how radioactive a nucleus will be?

3

What would the penetrative limit of gamma (γ) radiation be?

4

Which type of radiation can be represented by the particle shown?

_{ - 1}^{\,\,\,0}{e^ - }

5

What type of particle does X represent in the equation shown?

\,_{\,91}^{234}Pa \to _{\,92}^{234}U + X

6

What type of particle does X represent in the equation shown?

_{\,84}^{218}Po \to _{\,82}^{214}Pb + X

7

Which of the following would reduce the half-life of a radioisotope?

8

Which radioisotope is used to date the age of once living materials?

9

After 24 days, the mass of a radioisotope was found to be one quarter its original mass. What is the half-life of the radioisotope?

10

A medical radioisotope has a half life of 1.5 hours. Its radioactivity was recorded as 10,000 counts min-1 at 9am. What will the count rate be by 3pm?