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प्रश्न
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
पर्याय
Molecule
Orbits
Atom
Valency
Radical
उत्तर
Atom
APPEARS IN
संबंधित प्रश्न
Why is it not possible to see an atom with naked eyes?
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
WRITE SHORT ANSWER
Name three inert gases.
Write the names of the elements present in the:-
Ammonia
Write the names of `"FeS"` compounds :
Define: Relative atomic mass
Name two particles found inside the nucleus. What are they collectively called ?
Define: Covalent bond
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
Does the particle have an excess of electrons or a deficiency of electrons ?
Fill in the blank
An excess of electrons produces a ________ charge.
Draw the electron dot structure of this compound.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form negative ion?
The smallest particle of matter that can exist by itself is ______.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Non-metal
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
In the nucleus of `""_20"Ca"^40`, there are ______
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
The ______ are combination of atoms of various elements or the same element.
