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प्रश्न
Name the particles which revolve around the nucleus.
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उत्तर
Electron.
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संबंधित प्रश्न
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
WRITE SHORT ANSWER
Name three inert gases.
Write the names of the elements present in the:-
Sodium hydroxide
Write the names of `"Ca"("NO"_3)_2` compounds :
Name two particles found inside the nucleus. What are they collectively called ?
Define: Covalent bond
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
What does the word ‘atom’ mean?
Define: An Atom:
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
The smaller particles found in the atom is called ______.
Define the following term with an example.
Metal
Define the following term with an example.
Non-metal
The number of atoms present in a molecule is called its ______.
Which of the following has maximum number of atoms?
The smallest unit of an element is ______.
