What is the primary reason for a nucleus to emit radiation?
Introduction to Radioactivity and Types of Radiation

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Physics, Science, Social Studies, Chemistry
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10th Grade - University
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To become more stable
To increase its atomic mass
To gain more electrons
To decrease its atomic number
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about alpha particles?
They have a range of several meters in air
They are highly penetrating
They are the same as a hydrogen nucleus
They consist of two protons and two neutrons
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the atomic number of a nucleus when it emits a beta particle?
It decreases by one
It remains unchanged
It increases by one
It doubles
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of radiation is most penetrating?
Neutrons
Alpha particles
Beta particles
Gamma rays
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the activity of a radioactive source measured?
In becquerels
In curies
In sieverts
In rads
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