# 5.6.1: Practice Nuclear Chemistry

Exercise $$\PageIndex{1}$$

What is the missing isotope in the reaction below?  What type of reaction is it?

$_{95}^{241}Am \rightarrow ? + _{2}^{4}He$

$$_{93}^{237}Np$$  It is alpha emission.

Exercise $$\PageIndex{1}$$

What is the missing isotope in the reaction below?  What type of reaction is it?

$_{28}^{58}Ni+_{1}^{1}H \rightarrow ? + _{2}^{4}He$

$$_{27}^{55}Co$$ It is nuclear bombardment.

Exercise $$\PageIndex{1}$$

What is the missing isotope in the reaction below?  What type of reaction is it?

$_{39}^{90}Y \rightarrow ? + _{–1}^{0}e$

$$_{40}^{90}Zr$$  It is beta emission.

Exercise $$\PageIndex{1}$$

What is the missing isotope in the reaction below?  What type of reaction is it?

$_{54}^{118}Xe \rightarrow ? + _{+1}^{0}e$

$$_{53}^{118}I$$  It is positron emission.

Exercise $$\PageIndex{1}$$

Two units used to measure absorbed dose of radiation are the rad and the gray (Gy). Their relationship is that 1 Gy = 100 rad, exactly.  If a medical treatment involves the absorption of 0.45 krad, what is that in Gy?

4.5 Gy

Exercise $$\PageIndex{1}$$

The units used to measure radioactivity of a sample are curies (Ci) or bequerel (Bq).  Their relationship is that 1 Ci = 3.7 x 1010 Bq (2 sig dig relationship).  If a radioactive sample is giving off 35 nCi, how many Bq is that?.

1300 Bq

### More Chapter 5 Practice

Exercise $$\PageIndex{1}$$

What is the missing isotope in the reaction below?  What type of reaction is it?

$_{24}^{51}Cr \rightarrow ? + _{–1}^{0}e$

$$_{25}^{51}Mn$$  It is beta emission.

Exercise $$\PageIndex{1}$$

What is the missing isotope in the reaction below?  What type of reaction is it?

$_{18}^{40}Ar+_{2}^{4}He \rightarrow ? + _{1}^{1}H$

$$_{19}^{43}K$$ It is nuclear bombardment.

Exercise $$\PageIndex{1}$$

What is the missing isotope in the reaction below?  What type of reaction is it?

$_{84}^{214}Po \rightarrow ? + _{2}^{4}He$

$$_{82}^{210}Pb$$  It is alpha emission.

Exercise $$\PageIndex{1}$$

What is the missing isotope in the reaction below?  What type of reaction is it?

$_{80}^{188}Hg \rightarrow ? + _{+1}^{0}e$

$$_{79}^{188}Au$$  It is positron emission.

Exercise $$\PageIndex{1}$$

Two units used to measure absorbed dose of radiation are the rad and the gray (Gy). Their relationship is that 1 Gy = 100 rad, exactly.  If a medical treatment involves the absorption of 75 mrad, what is that in Gy?

Exercise $$\PageIndex{1}$$