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प्रश्न
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
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उत्तर
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संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
WRITE SHORT ANSWER
Define an ionic compound.
Write the names of the elements present in the:-
Glucose
Write the names of the elements present in the:-
Sodium hydroxide
Write the names of `("NH"_4)_2"SO"_4` compounds:
What are orbits or shells ?
What is the maximum number of electrons present in:
1. first shell
2. second shell
3. third shell and
4. fourth shell
What does the word ‘atom’ mean?
Define: An Atom:
Fill in the blank
If an atom gains an electron, it is called an _______
Name the unit in which the radius of an atom is usually expressed.
For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.
Which has more atoms, 50 g of aluminium or 50 g of iron ? Illustrate your answer with the help of calculations.
(Atomic masses : Al = 27 u ; Fe = 25 u)
Define the following term:
Atom
The smallest particle of matter that can exist by itself is ______.
Define the following term with an example.
Non-metal
Define the following term with an example.
Metalloid
______ is the smallest particle of an element.
