We divide that by 100 we get 6.92 a. M. U. amu d. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure.The chemical symbol for Lithium is Li. Given the information that 92.58% of all lithium atoms found in nature are lithium-7 and 7.42% are lithium-6, show that the atomic mass of lithium, Li (atomic … American Elements is a U.S. Lithium 7 Metal is one of over 250 stable Metallic isotopes produced by American Elements for biological and biomedical labeling, as target materials and other applications. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. It is both naturally occurring and a produced by fission. Lithium-7 is also used to alkalize coolant in pressurized water reactors. As for the position where to find lithium within the periodic table of the elements, lithium is in group 1 and period 2. Lithium (atomic symbol: Li, atomic number: 3) is a Block S, Group 1, Period 2 element with an atomic weight of 6.94. Element Lithium (Li), Group 1, Atomic Number 3, s-block, Mass 6.94. Calculate the atomic mass of lithium-6. If you want, you can go to the periodic table and on the periodic table will see that a more accurate masses, one very similar to what we just calculated at 6.94 a. M u. Lithium has only two naturally occurring isotopes. Because of its high reactivity, elemental lithium does not occur in nature. Record what the actual number needed. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. SUPER Challenge 7) Chlorine has two possible isotopes. Lithium has two stable isotopes Li-6 and Li-7, the latter being 92.5% in nature (hence relative atomic mass of natural lithium of 6.94). The atomic mass of an element is determined by the total mass of neutrons and protons that can be found in a single atom belonging to this element. 2. Get an answer to your question “Lithium has two isotopes.Li-6 and Li-7. In its elemental form, lithium is soft enough to cut with a knife its silvery white appearance quickly darkens when exposed to air. Verify that the atomic weight of lithium is 6.94 given the following information:$^{6} \mathrm{Li},$ mass $=6.015121 \mathrm{u} ;$ percent abundance$=7.50 \%$$^{7} \mathrm{Li},$ mass $=7.016003 \mathrm{u} ;$ percent abundance $=92.50 \%$. Which isotope of nitrogen is found in nature? American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. An atomic number of 3 and a mass number of 7 means that there are three protons and four neutrons. 6.41548 amu d. Is the average atomic mass you just determined closer to the mass of lithium-6 or lithium-7? }6.00 \text { amu } \quad \text { b. } A) 7.0160 amu B) 6.942 amu C) 6.495 amu D) 13.031 amu Question 2 The … All rights reserved. Lithium-7, they thought, reacted poorly to neutron bombardment. The electronic configuration for lithium is written as 2.1 (showing that lithium atoms have three electrons, two in the first shell and one in the second shell). describe a method to calculate the average atomic mass of lithium-6 and lithium-7? Nuclear industry use: Li-7. Atomic Number of Lithium. Problem 5 Calculate the nuclear binding energy of one lithium-6 atom. Lithium 7 Metal (Lithium-7) is a stable (non-radioactive) isotope of Lithium. Lithium-Ion battery technology, which is becoming increasingly more prevalent in electronics electrons in 1st... 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