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प्रश्न
______ is the smallest particle of an element.
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उत्तर
Atom is the smallest particle of an element.
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संबंधित प्रश्न
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
Name the particle or particles you would expect to find in :
The nucleus of an atom
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
How is the size of an atom indicated ?
What value has been given to the mass of this reference atom ?
One nm is equal to :
The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Name the gas that.
Turns moist starch iodide paper blue black.
Write any two observations which support the fact that atoms are divisible.
