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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
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms an anion?
State differences between the properties of ionic compounds and covalent compounds.
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is
What is the contribution of the following in atomic structure?
Democritus
Complete the following table relating to the atomic structure of some elements.
|
Element Symbol |
Atomic Number |
Mass Number |
Numbers of neutrons |
Number of Electrons |
Number of Protons |
|
Li |
3 |
6 |
|
|
|
|
Cl |
17 |
|
20 |
|
|
|
Na |
|
|
12 |
|
11 |
|
Al |
|
27 |
|
|
13 |
|
S |
|
32 |
16 |
|
|
Give the orbital diagram of the following:
Hydrogen chloride
What is meant by a chemical bond?
How many atoms of each kind are present in the following molecule:
Chlorine
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
