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प्रश्न
Name the particles which actually determine the mass of an atom.
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उत्तर
The particles which actually determine the mass of an atom are neutrons and protons.
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संबंधित प्रश्न
Explain the Atomic number with example.
What is variable valency? Name two elements having variable valency and state their valencies.
Fill in the blank of the following statement :
All the mass of an atom is concentrated in a small region of space called the ___________.
Give reason
Actual atomic mass is greater than mass number.
Differentiate between the following term:
Atomic number and mass number
Complete the following table.
| Atomic Number | Mass Number | Number of Neutrons | Number of Protons | Number of Electrons | Name of the Element |
| 9 | ______ | 10 | ______ | ______ | ______ |
| 16 | ______ | 16 | ______ | ______ | ______ |
| ______ | 24 | ______ | ______ | 12 | Magnesium |
| ______ | 2 | ______ | 1 | ______ | ______ |
| ______ | 1 | 0 | 1 | 1 | ______ |
The particles that make up the atom are called ______ particles.
Match the following:
| Column A | Column B | ||
| 1. | Mass of proton | a. | +1 |
| 2. | Mass of electron | b. | -1 |
| 3. | Charge of electron | c. | 9.31 x 10-28g |
| 4. | Charge of proton | d. | 1.67 x 10-24g |
If element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
What are the letters A, Z, and X stand for?
