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प्रश्न
Complete the table below by identifying A, B, C, D, E and F.
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उत्तर
| Element | Symbol | Number of protons |
Numbers of neutrons |
Number if electrons |
| Fluorine | `""_9F""^19` | 9 | `A` | `B` |
| Aluminium | `C` | `D` | `14` | `13` |
| Postassium | `""_19K""^39` | `E` | `F` | `19` |
ans
| Element | Symbol | Number of protons | Number of neutrons | Numbers if electrons |
| Fluorine | `""_9F""^19` | 9 | 10 | 9 |
| Aluminium | `""_13Al""^27` | 13 | 14 | 13 |
| Potassium | `""_19K""^39` | 19 | 20 | 19 |
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संबंधित प्रश्न
Fill in the blank
The ..........................of an atom is very hard and dense.
Multiple Choice Questions
The number of electrons in an atom is equal to number of
Tick the most appropriate answer
Which one of the following scientists put forward the theory regarding the extra-nuclear structure of the atom?
- James Chadwick
- John Dalton
- Rutherford
- Niels Bohr
WRITE SHORT ANSWER
What is the central part of an atom known as?
On the basis of Rutherford's model of an atom, which subatomic particle is present in the nucleus of an atom?
Which part of atom was discovered by Rutherford?
How was it shown that atom has empty space?
Name the following:
The element which does not contain any neutron in its nucleus.
Explain in brief – Lod Rutherford’s experiment which led to the discovery of the atomic nucleus.
What is meant by the term nucleus
