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प्रश्न
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
पर्याय
(i), (ii) and (iii)
(i), (iii) and (iv)
(ii), (iii) and (iv)
(i), (ii) and (iv)
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उत्तर
(i), (ii) and (iv)
Explanation -
Dalton’s atomic theory successfully explained law of conservation of mass, law of constant composition and law of multiple proportion
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Write the names of the elements present in the:-
Sodium hydroxide
Fill in the blank
An ion with negative charge is called _______
Name two particles found inside the nucleus. What are they collectively called ?
Name three non-metals/radicals which have valency -1, -2, and -3.
What does the word ‘atom’ mean?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
Write the full form of IUPAC.
Name the unit in which the radius of an atom is usually expressed.
What is an atom ? How do atoms usually exist ?
Define the following term:
Atom
Draw the electron dot structure of this compound.
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.
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
The smallest particle of matter that can exist by itself is ______.
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
______ is a substance that is made up of three oxygen atoms chemically combined.
