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प्रश्न
How is the size of an atom indicated ?
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उत्तर
The size of an atom is indicated by its radius.
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संबंधित प्रश्न
Write the names of `"Ca"("NO"_3)_2` compounds :
Write the names of `"FeS"` compounds :
Define: Relative atomic mass
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Name the particles which revolve around the nucleus.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
Name the unit in which the radius of an atom is usually expressed.
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
The electron shell ______ is nearest to the nucleus.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
A compound containing one atom of carbon and two atoms of oxygen is ______.
The smaller particles found in the atom is called ______.
Define – Atom.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
Project.
To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.
Write any two observations which support the fact that atoms are divisible.
The first scientific theory about atoms was given by J J. Thomson.
Atoms have a radius of the order ______.
