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प्रश्न
How did Neils Bohr visualise the atom ?
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उत्तर
Niels Bohr explained that atom is like a solar system with an empty space with a minute central nucleus, like Sun and electrons life planets revolve around it.
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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
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
WRITE SHORT ANSWER
What is radioactivity?
Write the names of the elements present in the:-
Ammonia
Write the names of the elements present in the:-
Glucose
State Dalton’s atomic theory.
Fill in the blank
If an atom gains an electron, it is called an _______
Why is it not possible to see an atom even with the most powerful microscope ?
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
Electron, proton, neutron are the types of ______ in an atom.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
K: Potassium:: C: ______.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
In the nucleus of `""_20"Ca"^40`, there are ______
Write any two observations which support the fact that atoms are divisible.
The smallest unit of an element is ______.
Lead is also known as plumbum.
