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प्रश्न
Name the three subatomic particles present in an atom.
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उत्तर
The three subatomic particles present in an atom are: electron, proton and neutron.
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संबंधित प्रश्न
Write the names of the elements present in the:-
Acetic acid
State Dalton’s atomic theory.
Name the particle or particles you would expect to find in :
The nucleus of an atom
Fill in the blank
If an atom gains an electron, it is called an _______
How is the size of an atom indicated ?
State two observations which show that atom is not indivisible.
An atom of element E contains 3 protons, 3 electrons and 4 neutrons :
(a) What is its atomic number?
(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?
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)
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
The basic unit of matter is ______.
Define the following term with an example.
Metal
Define the following term with an example.
Non-metal
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
1 mole of Gold and Silver contain same number of atoms.
Does the solubility of a substance change with temperature? Explain with the help of an example.
The smallest unit of an element is ______.
The most abundant type of atom is the universe is ______.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
Lead is also known as plumbum.
