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प्रश्न
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
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उत्तर
Dalton’s atomic theory states that atoms are indivisible. This statement is not valid as, atoms can be further divided into electrons, protons and neutrons. This is one of the major drawbacks of Dalton’s atomic theory of matter.
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संबंधित प्रश्न
Write the names of `("NH"_4)_2"SO"_4` compounds:
State Dalton’s atomic theory.
Name the particle or particles you would expect to find in :
The nucleus of an atom
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
Fill in the blank
A charged particle is called an _____
Name the three subatomic particles present in an atom.
Fill in the following blanks with suitable words :
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How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
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- Chlorine ion
- Carbon atom
- Oxygen ion
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Which element will lose electron?
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
Define the following term with an example.
Metal
______ is the smallest particle of an element.
Which of the following has maximum number of atoms?
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
The graphite refill used is pencil is made of element called ______.
The most abundant type of atom is the universe is ______.
What are the 3 most abundant atoms on the earth?
