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प्रश्न
Name the particle or particles you would expect to find in :
The orbit of an atom
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उत्तर
The orbit of an atom : electrons
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संबंधित प्रश्न
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
WRITE SHORT ANSWER
Define an ionic compound.
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
What is the maximum number of electrons present in:
1. first shell
2. second shell
3. third shell and
4. fourth shell
Who originated the word ‘atom’ ?
Fill in the blank
A charged particle is called an _____
How is the size of an atom indicated ?
Write the relation between nanometre and metre.
What is an atom ? How do atoms usually exist ?
In what respects do the three isotopes of hydrogen differ? Give their structures.
Define the following term with an example.
Metalloid
Atoms of one element can be transmuted into atoms of other elements by ______
1 mole of Gold and Silver contain same number of atoms.
Does the solubility of a substance change with temperature? Explain with the help of an example.
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
Write any two observations which support the fact that atoms are divisible.
A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let Sn be the distance travelled by the block in the interval t = n – 1 to t = n. Then, the ratio `S_n/(S_(n + 1))` is ______.
