All about the Periodic table

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Across
  1. 2. The study of spectra, especially to determine the chemical composition of substances and the physical properties of molecules, ions, and atoms.
  2. 5. Device used by the scientists in order to measure atomic mass.
  3. 7. In chemistry, it states that many of the physical and chemical properties of the elements tend to recur in a systematic manner with increasing atomic number.
  4. 11. It is the Anglo-Saxon name for metal.
  5. 12. She is a Polish-born french chemist who twice won the Nobel Prize and is best known for her investigations of radioactivity with her husband.
  6. 13. Because of the flammability of Sulfur, alchemists regarded it as essential in ___________.
  7. 14. A process in which the atom breaks into smaller "daughter" components.
  8. 16. Chemically the simplest substances and hence cannot be broken down using chemical methods.
  9. 19. Meitnerium's previous name.
  10. 20. It ranks about 12th in abundance among elements in Earth's crust.
  11. 22. A substance that is a mixture of two or more metals, or of a metal with a nonmetallic material.
Down
  1. 1. The process of building up the nucleus of an element from protons and neutrons.
  2. 3. One of two or more species of atom having the same atomic number, hence constituting the same element, but differing in mass number.
  3. 4. It causes opposite electric charges to attract each other and like charges to repel each other.
  4. 6. Meaning of the Latin word 'rubidus' wherein Rubidium was derived.
  5. 7. A radioactive mineral composed of of the minerals uraninite and is one of the main ores of Uranium.
  6. 8. It is the second largest object in the asteroid belt after the dwarf planet Ceres. The name Palladium was obtained in this word.
  7. 9. A mixture of concentrated hydrochloric and nitric acids that is still occasionally used in the chemical laboratory for dissolving gold and platinum.
  8. 10. Meaning of the Greek word 'phosphoros'.
  9. 11. ELEMENT Metallic element that has an incomplete penultimate electron shell and variable valences, and typically forms colored compounds.
  10. 15. It was discovered in 1952 by American chemist Albert Ghiorso and his colleagues in the produced by a thermonuclear explosion.
  11. 17. It was the name for Titanium during 1791 given by British clergyman William Gregor.
  12. 18. It is a Latin word wherein the two-letter symbol for the element Gold was obtained. ­­
  13. 21. A chemically inert rare gas belonging to Group 18 of the periodic table.