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प्रश्न
The smallest particle of matter that can exist by itself is ______.
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उत्तर
The smallest particle of matter that can exist by itself is atom.
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संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
Write the names of `"FeS"` compounds :
What does an atom consist of ? Explain.
State Dalton’s atomic theory.
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
How many times is a proton heavier than an electron?
The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
In what respects do the three isotopes of hydrogen differ? Give their structures.
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
Draw the diagrams representing the atomic structures of the following: Neon
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
A compound containing one atom of carbon and two atoms of oxygen is ______.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the term ions or radicals.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
