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प्रश्न
Fill in the following blanks in respect of an atom of an element
| No. of protons | No. of neutron | Mass number | Atomic number | No. of electrons | Symbol |
| 11 | 12 | ___________ | ___________ | ___________ | ________ |
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उत्तर
| No. of protons | No. of neutron | Mass number | Atomic number | No. of electrons | Symbol |
| 11 | 12 | 23 | 11 | 11 | Na |
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संबंधित प्रश्न
Complete the following table.
| Atomic number | Mass number | Number of Neutrons | Number of protons | Number of electrons | Name of the Atomic species |
| 9 | - | 10 | - | - | - |
| 16 | 32 | - | - | - | Sulphur |
| - | 24 | - | 12 | - | - |
| - | 2 | - | 1 | - | - |
| - | 1 | 0 | 1 | 0 | - |
Dalton said that ______ could not be divided.
Give the following a suitable word/phrase.
Atoms of same element with same atomic number but a different mass number.
Fill in the blank of the following statement :
All the mass of an atom is concentrated in a small region of space called the ___________.
What is meant by the 'atomic number of an element'?
Name or state the following:
Elements having same mass number but different atomic number
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
Which sub-atomic particles in the 3 isotopes of ‘H’ are the same.
What is mass number of an atom?
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 |
Element ‘P' has electronic configuration 2,8,8,1. The number of chlorine atoms present in the chloride of ‘P’ is ______.
