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प्रश्न
Define the term of atomic number.
What is meant by the term atomic number
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उत्तर
Atomic number [Z]: “Is the number of protons in the nucleus of an atom.”
OR “Is the number of positive charges in the nucleus of its atom.”
OR “Is the number of electrons in the complete atom.”
Z = P = e
संबंधित प्रश्न
What are the atomic numbers of elements whose outermost electrons is represented by 3s1.
FILL IN THE BLANK
Atomic theory of matter was given by ..........................
ÅIn group I of the periodic table, three elements X, Y, and Z have ionic radii 1.33 Å, 0.95 Å and 0.60 Å respectively. Giving a reason, arrange them in the order of increasing atomic number in the group.
The number of electrons in the atom of an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of an atom of this element ?
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. Mass number of an atom is the number of protons and | A: Electron |
| 2. The sub-atomic particle with a negligible mass. | B: Argon |
| 3. An atom having stable electronic configuration. | C: Nitrogen |
| 4. A molecule formed by sharing of electrons [covalency] | D: Sodium |
| 5. A metallic atom having unstable electronic configuration. | E: Neutrons |
What is atomic number?
The particles that make up the atom are called ______ particles.
Explain the following terms.
- Proton
- Electron
- Neutron.
The No. of electrons in the outermost shell of the atom of an inert gas ______.
In a neutral atom number of protons is equal to the number of neutrons.
