Atomic Theory: Rutherford's Proposal
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Questions and Answers

Rutherford propose the first scientific theory about atom explaining its indivisibility

False

NPK fertilizer contains nitrogen, calcium and potassium

False

each main energy level composed of a number of energy sub levels in which electrons revolved in same shape

False

the energy of level increase as it gets away from the nucleus

<p>True</p> Signup and view all the answers

The third energy level of the atom is located between levels K and M and can be saturated with 8 electrons.

<p>False</p> Signup and view all the answers

The atomic number is written at the upper right side of an element's symbol.

<p>False</p> Signup and view all the answers

The number of neutrons is twice the number of protons in tritium isotopes.

<p>True</p> Signup and view all the answers

atom which contain 13 protons , 14 neutrons and 13 electrons is electrically neutral

<p>True</p> Signup and view all the answers

the higher energy levels are filled with with electron first

<p>False</p> Signup and view all the answers

Na 11 and Al 13 have the same number of electrons in energy level (L)

<p>True</p> Signup and view all the answers

Study Notes

Rutherford's Atomic Theory

  • Rutherford was the first to propose a scientific theory about the atom.
  • His theory explained that atoms are not indivisible.

NPK Fertilizer

  • NPK fertilizer contains:
    • Nitrogen
    • Calcium
    • Potassium

Electron Energy Levels

  • Each main energy level in an atom is composed of a number of sublevels.
  • Electrons within a sublevel revolve in the same shape.
  • The energy of an energy level increases as it gets further from the nucleus.

Third Energy Level

  • The third energy level of an atom is located between levels K and M.
  • It can be filled with up to 8 electrons.

Atomic Number

  • The atomic number is written at the upper right side of an element's symbol.

Tritium Isotopes

  • Tritium isotopes have twice as many neutrons as protons.

Electrically Neutral Atoms

  • An atom with 13 protons, 14 neutrons, and 13 electrons is electrically neutral.

Electron Configuration

  • Higher energy levels are filled with electrons first.

Electron Configuration of Sodium and Aluminum

  • Sodium (Na) and Aluminum (Al) have the same number of electrons in their L energy level.

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Description

Explore the groundbreaking ideas of Ernest Rutherford regarding atomic theory. This quiz delves into his proposition on the indivisibility of the atom and its implications in the field of physics. Test your understanding of key concepts and the evolution of atomic models.

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