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प्रश्न
The smaller particles found in the atom is called ______.
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उत्तर
he smaller particles found in the atom is called sub-atomic particels.
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संबंधित प्रश्न
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
WRITE SHORT ANSWER
Define an ionic compound.
ANSWER IN DETAIL
How are isobars different from isotopes ?
Define:- Atom
Fill in the blank:
Atoms are _____
Define: Ions
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Name the particles which revolve around the nucleus.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
Fill in the blank
An _______ is electrically neutral.
Name the unit in which the radius of an atom is usually expressed.
What value has been given to the mass of this reference atom ?
An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
The electron shell ______ is nearest to the nucleus.
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
Name the sub-atomic particles.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
Define the following term with an example.
Compound
The volume occupied by 4.4 g of CO2 at S.T.P ______
Which of the following has maximum number of atoms?
A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
Write any two observations which support the fact that atoms are divisible.
The most abundant type of atom is the universe is ______.
A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let Sn be the distance travelled by the block in the interval t = n – 1 to t = n. Then, the ratio `S_n/(S_(n + 1))` is ______.
