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प्रश्न
Calculate the number of neutrons, protons and electrons:
- atomic number 3 and mass number 7
- atomic number 92 and mass number 238.
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उत्तर
- Number of neutrons – 4
Number of protons – 3
Number of electrons – 3 - Number of neutrons – 146
Number of protons – 92
Number of electrons – 92
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संबंधित प्रश्न
Name the three sub-atomic particles of an atom.
Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?
A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.
Name the element which does not contain any neutrons in its nucleus.
State the number of neutrons in each of the atoms A to E. Also state which of the atoms A to E is a metal.
Identify the Mg2+ ion from the Fig. where, n and p represent the number of neutrons and protons respectively
Isotopes exist because atoms of the same element can have different numbers of ______.
What is the charge of a neutron?
Which subatomic particles have no charge?
The stability of the nucleus is determined by the Neutron – Proton ratio.
