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प्रश्न
The atomic number and mass number of sodium are 11 and 23 respectively. What information is conveyed by this statement?
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उत्तर
Atomic number (11) of sodium conveys information that the number of protons and electrons is the same.
Mass number (23) of sodium indicates the sum of protons and neutrons.
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संबंधित प्रश्न
Fill in the following blanks :
| Atomic Number | Mass Number | Protons | Neutrons | Electrons | Symbol |
| 10 | 22 | _________ | _________ | _________ | _________ |
If an atom ‘A’ has atomic number 19 and mass number 39, state –
- Its electronic configuration.
- The number of valence electrons it possesses.
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
If an isotope of ‘H’ has mass no. = 2, how many electrons does it have.
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.
Define the term of atomic number.
What is a neutron?
‘A’ is denoted by ______.
Mass No. 27 is for the element ______.
In a neutral atom number of protons is equal to the number of neutrons.
What are the letters A, Z, and X stand for?
