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प्रश्न
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
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उत्तर
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
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संबंधित प्रश्न
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
Define:- Atom
Write the names of the elements present in the:-
Acetic acid
Fill in the blank
An ion with negative charge is called _______
Name the particle or particles you would expect to find in :
The nucleus of an atom
Fill in the blank
A charged particle is called an _____
Fill in the blank
An _______ is electrically neutral.
Why is it not possible to see an atom even with the most powerful microscope ?
One nm is equal to :
Draw the electron dot structure of this compound.
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.
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
The smallest particle of matter that can exist by itself is ______.
Define – Atom.
The number of atoms present in a molecule is called its ______.
Does the solubility of a substance change with temperature? Explain with the help of an example.
The ______ are combination of atoms of various elements or the same element.
The first scientific theory about atoms was given by J J. Thomson.
