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प्रश्न
Define the following term:
Atom
उत्तर
An atom is the smallest particle of an element which retains its chemical identity in all physical and chemical changes.
संबंधित प्रश्न
Why is it not possible to see an atom with naked eyes?
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
WRITE SHORT ANSWER
What is radioactivity?
ANSWER IN DETAIL
How are isobars different from isotopes ?
Write the names of the elements present in the following compound.
Common salt
Fill in the blank
An ion with negative charge is called _______
What does an atom consist of ? Explain.
Name two particles found inside the nucleus. What are they collectively called ?
State Dalton’s atomic theory.
Which of the following statement is correct about the atom of an element ?
In what respects do the three isotopes of hydrogen differ? Give their structures.
Define the following term with an example.
Element
K: Potassium:: C: ______.
Draw the structure of an atom and explain the position of the sub-atomic particles.
An element is composed of ______ atoms.
In the nucleus of `""_20"Ca"^40`, there are ______
Give the salient features of “Modern atomic theory”.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
What is the fundamental particle of an element?
