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प्रश्न
What is an atom ? How do atoms usually exist ?
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उत्तर
Atoms are building blocks of all matter. They are the smallest particles of elements that can take part in a chemical reaction.
Atoms usually exist in combined form, in two ways:
- in the form of molecules
- in the form of ions
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संबंधित प्रश्न
Tick the most appropriate answer.
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- Henri Becquerel
- Marie Curie
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| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
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| \[\ce{_11^23Na}\] | Neutron number |
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| \[\ce{_17^37 Cl}\] | Proton number |
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