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CBSE › Class 9 › Science › Journey Inside the Atom (Class 9 NCERT New)
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1. 7.How many electrons does this oxygen atom have?

2. 10.All matter is made of atoms

3. What do isotopes of an element have in common?

4. How many neutrons does the isotope of lithium have?

5. How many protons does this isotope of titanium have?

6. What quantities vary between isotopes of an element?

7. What is the charge of a neutron?

8. (select the right answer)Overall atoms are ______ and have an equal number of ________ and ________

9. Which type of radiation releases an electron?

10. What type of radiation can be stopped by a piece of paper?

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