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प्रश्न
Define: Ions
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उत्तर
An atom which becomes charged by losing or gaining electrons is called an ion.
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संबंधित प्रश्न
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Define: Chemical bond
What does an atom consist of ? Explain.
Name the particles which revolve around the nucleus.
Give two examples for each of ionic and covalent bond.
What does the word ‘atom’ mean?
Fill in the blank
A charged particle is called an _____
Write the relation between nanometre and metre.
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)
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
State the meaning of the term – (a) atom, (b) molecule, (c) radical – with a suitable example.
Define the following term with an example.
Element
Define the following term with an example.
Compound
Define the following term with an example.
Non-metal
1 mole of Gold and Silver contain same number of atoms.
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
Lead is also known as plumbum.
What is the fundamental particle of an element?
The ______ are combination of atoms of various elements or the same element.
