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प्रश्न
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 |
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उत्तर
| List I | List II |
| 1. Mass number of an atom is the number of protons and | E: Neutrons |
| 2. The sub-atomic particle with a negligible mass. | A: Electron |
| 3. An atom having stable electronic configuration. | B: Argon |
| 4. A molecule formed by sharing of electrons [covalency] | C: Nitrogen |
| 5. A metallic atom having unstable electronic configuration. | D: Sodium |
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संबंधित प्रश्न
Multiple Choice Questions
The sub atomic particle with negative charge is
(a) Which of the nuclear particles is present in the same fixed number in the atoms of any particular element?
(b) What do we call this number which is characteristic of a particular element?
From the symbol `""_12^24"Mg"`
, state the mass number, the atomic number and electronic configuration of magnesium.
Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one:
- Forms an anion
- Forms a cation
- Has four electrons in its valence shell?
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Argon – \[\ce{^40_18Ar}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
Define the term of atomic number.
Explain the following terms.
- Proton
- Electron
- Neutron.
‘A’ is denoted by ______.
If M is the atomic mass and A is the mass number, then packing fraction is given by ______.
In which one of the following, the number of protons is greater than the number of neutrons but number of protons is less than the number of electrons?
