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प्रश्न
The smaller particles found in the atom is called ______.
उत्तर
he smaller particles found in the atom is called sub-atomic particels.
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संबंधित प्रश्न
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
WRITE SHORT ANSWER
Define an ionic compound.
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Fill in the blank
An ion with positive charge is called ______
What does an atom consist of ? Explain.
Name three non-metals/radicals which have valency -1, -2, and -3.
How did Neils Bohr visualise the atom ?
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
Write the full form of IUPAC.
Name the three subatomic particles present in an atom.
What value has been given to the mass of this reference atom ?
What is an atom ? How do atoms usually exist ?
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
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)
Define the following term:
Atom
In what respects do the three isotopes of hydrogen differ? Give their structures.
State the meaning of the term – (a) atom, (b) molecule, (c) radical – with a suitable example.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Non-metal
Define the following term with an example.
Metalloid
Which of the following statements made by Dalton has not undergone any change?
Define the term ions or radicals.
Does the solubility of a substance change with temperature? Explain with the help of an example.
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Write any two observations which support the fact that atoms are divisible.
The smallest unit of an element is ______.
______ is a substance that is made up of three oxygen atoms chemically combined.
The ______ are combination of atoms of various elements or the same element.
