Question

Why is radon-222 considered dangerous?

Answer 1

q1. all of these

q2 false

q3 can be in liquid, solid or gas forms

q4 idk

q5 They usually remain radioactive for less than 100 years.

q6 idk

q7 TRUE

educated guess and i remember some things from chem. Hope its all good

Answer 2

Answer:

given below

Explanation:

1) correct answer is option d)

it is the second leading cause of lung cancer in USA it cannot be seen and smelled or tasted.

2) false

nuclear medicine can be used for wider variety of diseases.

3) correct answer is option d)

it is correct that radioactive element are present in liquid, solid or gas forms and it is very hazardous if they leaked and it can remain radioactive for long period of time.

4) the correct answer is option c

spent fuel are radioactive have many isotopes and is to be disposed  very carefully and it remains radioactive for less than 100 years.

5) True

Radioactivity waste should be properly disposed as it contain very hazardous material which can affect humans.

6) True

Nuclear energy is a renewable energy and it can be used as the alternative source of energy it produce less pollution.