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प्रश्न
Write the names of `"FeS"` compounds :
उत्तर
`"FeS"` - Iron sulphide
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संबंधित प्रश्न
Why is it not possible to see an atom with naked eyes?
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Write the names of the elements present in the :-
Sulphuric acid
Fill in the blank
An ion with negative charge is called _______
Define: Relative atomic mass
How did Neils Bohr visualise the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X ?
Fill in the blank
A charged particle is called an _____
How many times is a proton heavier than an electron?
For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.
Which has more atoms, 50 g of aluminium or 50 g of iron ? Illustrate your answer with the help of calculations.
(Atomic masses : Al = 27 u ; Fe = 25 u)
Define the following term:
Atom
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
Name the sub-atomic particles.
The volume occupied by 4.4 g of CO2 at S.T.P ______
Which of the following has maximum number of atoms?
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
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?
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
