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प्रश्न
Define the term:
orbit
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उत्तर
Orbit is a circular path around the nucleus in which electrons of the atom revolve.
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संबंधित प्रश्न
Mention the basic tendency of an atom which makes it to combine with other atoms.
Element X is a metal with a valency 2. Element Y is a non metal with a valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.
Name an element which does not contain neutron.
How does the Modern atomic theory contradict and correlate with Dalton's atomic theory?
Give a reason
Physical properties of isotopes are different.
State the type of bonding in the following molecules.
Hydrogen chloride
Explain the following:
Carbon-12 and carbon-14 both show similar chemical properties.
Copy and complete the following table relating to the atomic structure of some elements:
| Element | Atomic Number | Mass Number | Number of protons | Number of Neutrons | Number of Electrons |
| Beryllium | 4 | 9 | |||
| Fluorine | 9 | 10 | |||
| Sodium | 12 | 11 | |||
| Aluminium | 27 | 13 | |||
| Phosphorus | 31 | 15 |
Draw the geometric atomic structure of the three isotopes of hydrogen and the two isotopes of chlorine.
Elements A, B and C have atomic number 17, 19 and 10 respectively.
Write down the formula of the compound formed by two of the above elements.
