Joshua Horn

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Across
  1. 2. It is a chemical rule of thumb, which reflects the theory that keygroup elements tend to bond in such a way as each atom's valence shell contains eight electrons.
  2. 5. the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire
  3. 8. an atom with a net electric charge
  4. 10. It's an ion with positive charge
  5. 11. It's an ion with negative charge
  6. 12. The energy content of an electron is determined by a shell or orbital on which the electron resides relative to the atom's nucleus.
  7. 14. is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus during the process of beta decay.
  8. 15. Define the location of electrons near the atom nucleus.
  9. 17. A particle representing a quantum of light, or some kind of cosmic radiation. The photon has an energy that is proportional to the radiation frequency, but it does not have any rest mass.
  10. 18. penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei.
  11. 19. The atomic or other particle's lowest energy state.
  12. 21. It represents the reactants and products of radioactive decay, nuclear fission or fusion.
  13. 22. An energy level that has been defined by quantum theory. Energy related to electrons is referred to as a sub level in chemistry. The energies associated with a nucleus can also be regarded as sublevels in physics.
Down
  1. 1. the number of waves that pass a fixed point in unit time
  2. 3. The valence shell electrons in a molecule are represented in a very simplified way.
  3. 4. the electrons located at the outermost shell of an atom.
  4. 6. They are composed of two protons and two neutrons bound together into an entity identical to the helium-4 nucleus.
  5. 7. It is formed by direct observation of the excited gas through a spectroscope
  6. 9. It is an energy form that behaves as both magnetic and electric waves, traveling in a series of particles known as photons.
  7. 13. is energy from a source, which travels in space at light speed.
  8. 16. We're providing secure, end to end solutions for the management and preservation of data and the easy extraction of information from it.
  9. 20. The spontaneous fission of atomic nuclei produces the release of ionising radiation or particles.