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प्रश्न
Name the three subatomic particles present in an atom.
उत्तर
The three subatomic particles present in an atom are: electron, proton and neutron.
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संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
WRITE SHORT ANSWER
Define an ionic compound.
Write the names of the elements present in the:-
Acetic acid
Define: Chemical bond
What are orbits or shells ?
What are the building blocks of matter ?
Is it possible to see atoms these days ? Explain your answer.
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.
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
Define the following term:
Atom
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
What is the contribution of the following in atomic structure?
Maharshi Kanada
A compound containing one atom of carbon and two atoms of oxygen is ______.
Define the following term with an example.
Element
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
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 ______.
