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प्रश्न
State one observation which shows that atom is not indivisible.
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उत्तर
Chadwick discovered neutral particles present in an atom by bombarding light nuclei like beryllium with alpha particles, i.e. helium nuclei.
4Be9 + 2He4 → 6C12 + 0n1
Discovery of the neutron also showed that an atom is divisible.
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संबंधित प्रश्न
Complete the following:
| Sodium | Phosphorus | Carbon | |
| Formula of chloride | |||
| Nature of bonding | |||
| Physical state of chloride |
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.
Element X is a metal with a valency 2; Y is a non-metal with a valency 3.
(a) Write an equation to show how Y forms as ion
(b) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.
Name the following:
An element having valency 'zero'
Explain
Duplet rule for the formation of hydrogen
State the type of bond between Y and Z and give its molecular formula.
Give the orbital diagram of the following:
Magnesium chloride
Identify the following reaction as either oxidation or reduction:
O + 2e- → O2-
Draw the geometric atomic structure of the three isotopes of hydrogen and the two isotopes of chlorine.
How many electrons are required or released by each atom in chlorine to attain the nearest noble gas configuration?
