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प्रश्न
What does an atom consist of ? Explain.
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उत्तर
An atom consists protons, electrons and neutrons. Protons are positively charged, electrons have negative charge while neutrons have no charge
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संबंधित प्रश्न
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
ANSWER IN DETAIL
How are isobars different from isotopes ?
Write the names of the elements present in the:-
Acetic acid
Define: Mass number
Define: Relative atomic mass
Name the particle or particles you would expect to find in :
The orbit of an atom
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
How is the size of an atom indicated ?
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.
How many times is a proton heavier than an electron?
Electron, proton, neutron are the types of ______ in an atom.
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
The basic unit of matter is ______.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Atoms of one element can be transmuted into atoms of other elements by ______
What is the fundamental particle of an element?
