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प्रश्न
What is an α (alpha) particle?
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उत्तर
An α-particle is a doubly charged helium ion (He2+) containing two protons and two neutrons. It is formed by removing two electrons from the helium atom.
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संबंधित प्रश्न
Match the column A with Column B.
|
Column A |
Column B |
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(i) Sodium chloride (ii) Ammonium ion (iii) Carbon tetrachloride |
Covalent bond Ionic bond Covalent and coordinate bond |
Among the following compounds identify the compound that has all three bonds (ionic, covalent and coordinate bond).
What is the contribution of the following in atomic structure?
Democritus
State one observation which shows that atom is not indivisible.
Name the following:
An element having valency 'zero'
Give reason
Argon does not react.
Explain
Duplet rule for the formation of hydrogen
State the type of bond between Y and Z and give its molecular formula.
______ is the only noble gas that does not have eight electrons in its valence shell.
Spot the error/correct the wrong statement:
In the formation of compounds, the inner shell electrons of an atom involved in bonding.
