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प्रश्न
Copy and complete the following table relating to the atomic structure of some elements:
| Element | Atomic Number | Mass Number | Number of protons | Number of Neutrons | Number of Electrons |
| Beryllium | 4 | 9 | |||
| Fluorine | 9 | 10 | |||
| Sodium | 12 | 11 | |||
| Aluminium | 27 | 13 | |||
| Phosphorus | 31 | 15 |
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उत्तर
| Element | Atomic Number | Mass Number | Number of protons | Number of Neutrons | Number of Electrons |
| Beryllium | 4 | 9 | 4 | 5 | 4 |
| Fluorine | 9 | 19 | 9 | 10 | 9 |
| Sodium | 11 | 23 | 11 | 12 | 11 |
| Aluminium | 13 | 27 | 13 | 14 | 13 |
| Phosphorus | 15 | 31 | 15 | 16 | 15 |
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संबंधित प्रश्न
In term of electron transfer, define Oxidation
Fill in the blank.
___________ single covalent bonds are formed between the carbon and chlorine atoms.
What is the contribution of the following in atomic structure?
Democritus
What is an α (alpha) particle?
Define the term:
orbit
Give reason
Argon does not react.
Sodium having atomic number 11, is ready to ______ electron/ electrons to attain the nearest noble gas electronic configuration.
The element that would form anion by gaining electrons in a chemical reaction is ______.
How many atoms of each kind are present in the following molecule:
Chlorine
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a metal.
