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प्रश्न
Multiple Choice Questions
The sub atomic particle with negative charge is
विकल्प
proton
neutron
electron
nucleon
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उत्तर
electron
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संबंधित प्रश्न
The composition of the nuclei of two atomic species X and Y are given as under
| X | Y | |
| Protons | 6 | 6 |
| Neutrons | 6 | 8 |
Give the mass numbers of X and Y. What is the relation between the two species?
Multiple Choice Questions
The sum of number of protons and number of neutrons present in the nucleus of an atom is called its
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What is its atomic number and mass number?
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
Match the atomic numbers 4,8,10,15 and 19 with each of the following:
An element which does not form ion
The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
Do isotopes have the same atomic number or the same mass number?
Draw the structure of the following atoms showing the nucleus containing – protons, neutrons and the orbits with the respective electron:
Silicon [At. no. = 14, Mass no. = 28]
What are nucleons? How many nucleons are present in Phosphorous? Draw its structure.
What is mass number of an atom?
Explain the following terms.
- Proton
- Electron
- Neutron.
