On the basis of Rutherford’s model of an atom, which sub-atomic particle is present in the nucleus of an atom?

Academic Chemistry NCERT Class 9

As per Rutherford’s model of an atom, the protons (positively charged) are present in the nucleus of an atom.

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Updated on: 14-Mar-2023

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What were the drawbacks of Rutherford’s model of an atom?
On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole.
Name the three sub-atomic particles of an atom.
Which subatomic particle is not present in an ordinary hydrogen atom?
What are the limitations of Rutherford’s model of the atom?
The particle not present in an ordinary hydrogen atom is :(a) proton (b) neutron (c) nucleus (d) electron
What is the positive charge on the nucleus of an atom due to?
(a) What is the nucleus of an atom and what is the nature of charge on it?(b) Name the scientist who discovered the nucleus of atom.
What important information is furnished about the nucleus of an atom by the alpha particle scattering experiment of Rutherford?
Draw the atomic structure of(i) an atom with same number of sub-atomic particles, (ii) an atom with same number of electrons in L and M shell.
Give the evidence for the existence of nucleus in an atom.
(a) Describe Thomson's model of the atom. Which subatomic particle was not present in Thomson's model of the atom?(b) The mass number of an element is 18. It contains 7 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
What are the postulates of Bohr’s model of an atom?
Fill in the blanks in the following statements :(a) The number of protons in the nucleus of an atom is called its ....................(b) The total number of protons and neutrons in the nucleus of an atom is called its ....................(c) An atom has atomic mass number 23 and atomic number 11. The atom has .................... electrons.(d) An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of the atom is ....................(e) If the nucleus of an atom has atomic number 17, mass number 37 and there are 17 electrons outside the nucleus, the number of neutrons in it is ....................(f) Almost all the mass of an atom is concentrated in a small region of space called the ....................(g) Cathode rays are a beam of fast-moving ....................(h) The anode rays obtained from hydrogen gas consist of particles called ....................(i) The maximum number of electrons that can be accommodated in L shell are ....................(j) The maximum number of electrons that can go into the M shell is ....................(k) The subatomic particle not present in a hydrogen atom is ....................(l) The electron has .................... charge, the proton has .................... charge, and the neutron has .................... charge.
If the number of electrons in an atom is 8 and number of protons is also 8, then(i) What is the atomic number of the atom? and(ii) What is the charge on the atom?

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