Toxic substances and Hazardous and Nuclear Waste Control Act of 1990 Essays

Toxic substances and Hazardous and Nuclear Waste Control Act of 1990 Essays Toxic substances and Hazardous and Nuclear Waste Control Act of 1990 Paper Toxic substances and Hazardous and Nuclear Waste Control Act of 1990 Paper Objective: The objective of this act is to keep an inventory of chemicals that are presently being imported manufactured or used, indicating among others, their existing and possible uses, test data, names of firms manufacturing or using them and such other information as may be considered relevant to the protection of health and the environment To monitor and regulate the importation, manufacture, processing, handling, storage, transportation, sale, distribution, use and disposal of chemical substances and mixtures that present unreasonable risk or injury to health or to the environment in accordance with national policies and international commitments To inform and educate the populace regarding the hazards and risks attendant to the manufacture, handling, storage, transportation, processing, distribution, use and disposal of toxic chemicals and other substances and mixtures and lastly; To prevent the entry, even in transit, as well as the keeping or storage and disposal of hazardous and nuclear wastes into the country for whatever purpose Reaction: It’s good to know that our government have implemented this kind of act, it only shows that how our government is concern with us, because improper handling or improper storage of hazardous chemicals and throwing of nuclear wastes can cause bad health to us. It is also good because this act let us know what are we going to do with this kind of chemicals and wastes, it educate the people what are the hazards and risks in manufacturing this kind of wastes. Integration: As part of the jurisdiction of this article or republic act I’m going to help our government by following the rules and regulations under this law like the proper manufacturing of the nuclear and toxic waste before putting them on a storage or throwing them on the garbage bins I will be like an example to my fellow friends in our community, implementing this then letting them know what are the importance of this law, Learning: I’ve learned a lot like what is the importance of this law. RA 6969 is important or the ‘Toxic substances and Hazardous and Nuclear Waste Control Act of 1990’ because it let us inform or educate on what are we going to do with this kind of waste especially to nuclear, hazardous and toxic waste or substances like the proper manufacturing of the said waste and proper storage of it. I also learned the penalties and fines given to those who violate this act like being imprisoned for about 6 months to 6years.

Difference Between Atomic Radius and Ionic Radius

Difference Between Atomic Radius and Ionic Radius You cant simply whip out a yardstick or ruler to measure the size of an  atom. These  building blocks  of all matter  are much too small, and, since  electrons  are always in motion, the diameter of an atom is a bit fuzzy. Two measures used to describe atomic size are  atomic radius and  ionic radius. The two are very similar- and in some cases, even the same- but there are minor and important differences between them. Read on to learn more about these two ways to measure an atom. Key Takeaways: Atomic vs Ionic Radius There are different ways to measure the size of the atom, including atomic radius, ionic radius, covalent radius, and van der Waals radius.The atomic radius is half the diameter of a neutral atom. In other words, it is half the diameter of an atom, measuring across the outer stable electrons.The ionic radius is half the distance between two gas atoms that are just touching each other. This value may be the same as the atomic radius, or it may be larger for anions and the same size of smaller for cations.Both atomic and ionic radius follow the same trend on the periodic table. Generally, radius decreases moving across a period (row) and increases moving down a group (column). Atomic Radius The atomic radius is the distance from the atomic nucleus to the outermost stable electron of a neutral atom. In practice, the value is obtained by measuring the diameter of an atom and dividing it in half. The radii of neutral atoms ranges from 30 to 300 pm or trillionths of a meter. The atomic radius is a term used to describe the size of the  atom, however, there is no standard definition for this value. Atomic radius may actually refer to the  ionic radius,  as well as the  covalent radius, metallic radius, or  van der Waals radius. Ionic Radius The ionic radius is half the distance between two gas atoms that are just touching each other. Values range from 30 pm to over 200 pm. In a neutral atom, the atomic and ionic radius are the same, but many elements exist as anions or cations. If the atom loses its outermost electron (positively charged or cation), the ionic radius is smaller than the atomic radius because the atom loses an electron energy shell. If the atom gains an electron (negatively charged or anion), usually the electron falls into an existing energy shell so the size of the ionic radius and atomic radius are comparable. The concept of ionic radius is further complicated by the shape of atoms and ions. While particles of matter are often depicted as spheres, they arent always round. Researchers have discovered chalcogen ions are actually ellipsoid in shape. Trends in the  Periodic Table Whichever method you use to describe atomic size, it displays a trend or periodicity in the periodic table. Periodicity refers to the recurring trends that are seen in the element properties.  These trends became apparent to  Demitri Mendeleev  when he arranged the elements in order of increasing mass. Based on the properties that were displayed  by the known elements, Mendeleev was able to predict where there were holes in his table, or elements yet to be discovered. The  modern periodic table  is very similar to Mendeleevs table but today, elements are ordered by increasing  atomic number, which reflects  the number of protons  in an atom. There arent any undiscovered elements,  although new elements  can be created that have even higher numbers of protons. Atomic and ionic radius increase as you move down a column (group) of the periodic table because an electron shell is added to the atoms. Atomic size decreases as you move across a row- or period- of the table because the increased number of protons exerts a stronger pull on the electrons. Noble gasses are the exception. Although the size of a noble gas atom does increase as you move down the column, these atoms are larger than the preceding atoms in a row. Sources Basdevant, J.-L.; Rich, J.; Spiro, M. Fundamentals in Nuclear Physics. Springer. 2005. ISBN 978-0-387-01672-6. Cotton, F. A.; Wilkinson, G. Advanced Inorganic Chemistry (5th ed., p.1385). Wiley. 1988. ISBN 978-0-471-84997-1.Pauling, L. The Nature of the Chemical Bond (3rd ed.). Ithaca, NY: Cornell University Press. 1960Wasastjerna, J. A. On the Radii of Ions.  Comm. Phys.-Math., Soc. Sci. Fenn.  1  (38): 1–25. 1923