Mass number and representation of atom
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Q. Question 2
Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?
Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?
Q. Read the given data below and identify the correct option regarding X and Y.
| Atomic species | Number of electrons | Number of protons | Number of neutrons |
| X | 8 | 8 | 8 |
| Y | 8 | 8 | 10 |
- X and Y are neither isotopes nor isobars.
- X and Y are isobars.
- X and Y are isotopes.
Q.
Electron is one of the sub-atomic particles in an atom. Mention the other sub-atomic particles along with their charges.
