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प्रश्न
Define: An Atom:
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उत्तर
An Atom: Smallest particle of an element that can exist and have properties of an element.
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संबंधित प्रश्न
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.
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Define:- Atom
Define:- Radicals
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An ion with positive charge is called ______
Name three non-metals/radicals which have valency -1, -2, and -3.
Name the particle or particles you would expect to find in :
The orbit of an atom
What value has been given to the mass of this reference atom ?
Is it possible to see atoms these days ? Explain your answer.
What is the contribution of the following in atomic structure?
Maharshi Kanada
In what respects do the three isotopes of hydrogen differ? Give their structures.
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 element will gain electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
______ is a substance that is made up of three oxygen atoms chemically combined.
Atoms have a radius of the order ______.
