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Home/chapter 12 atoms

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Kasturi Jha
Kasturi Jha
Asked: January 17, 2025In: Class 12 Physics

Define ionisation energy. How would the ionisation energy change when electron in hydrogen atom is replaced by a particle of mass 200 times that of the electron but having the same charge?

Ionisation energy of an atom is defined as the energy required to remove an electron from ground state energy level to its free state. Ionisation energy of hydrogen is E = + me⁴/ 8€o²n²h² = + 13.6 eV . Class ...

chapter 12 atomsclass 12 physicsthe ionisation energy change when electron in hydrogen atom
  • 1 1 Answer
  • 18 Views
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Kasturi Jha
Kasturi Jha
Asked: January 17, 2025In: Class 12 Physics

Write two important limitations of Rutherford’s nuclear model of the atom.

Two important limitations of Rutherford nuclear model of the atom are as follows: (i) An electron revolving in a circular orbit is an example of accelerated motion. According to classical Physics, a particle in accelerated motion must radiate energy. Consequently, ...

chapter 12 atomsclass 12 physicstwo important limitations of rutherford's nuclear model
  • 1 1 Answer
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Kasturi Jha
Kasturi Jha
Asked: January 17, 2025In: Class 12 Physics

State the basic assumptions of the Rutherford model of the atom.

Basic assumptions of Rutherford’s atom model are as follows: (i) The nucleus of an atom contains whole positive charge and almost whole mass of the atom. Size of a nucleus is extremely small as compared to the overall size of ...

assumptions of the rutherford model of the atomchapter 12 atomsclass 12 physics
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Kasturi Jha
Kasturi Jha
Asked: January 17, 2025In: Class 12 Physics

When an electron falls from a higher energy to a lower energy level, the difference in the energies appears in the form of electromagnetic radiation. Why cannot it be emitted as other forms of energy?

Due to fall of electron from higher to lower energy level, the difference in energy is emitted in the form of electromagnetic radiation only because electrons can interact only electromagnetically. Class 12 Physics Chapter 12 Atoms Session 2024-2025.

chapter 12 atomsclass 12 physicsthe difference in the energies appears in the form of electromagnetic radiation
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Komal01 Verma
Komal01 Verma
Asked: January 16, 2025In: Class 12 Physics

State Bohr’s quantum condition for stationary orbits in terms of de-Broglie wavelength.

Total length of an orbital path of electron in nth state of atom should be in times (where n is an integer), the value of de-Broglie wavelength λ.. Thus, 2πτη = η λde. Class 12 Physics Chapter 12 Atoms Session ...

chapter 12 atomsclass 12 physicsshort answer questionsstationary orbits in terms of de-broglie wavelength
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