WebAtomic Number – Protons, Electrons and Neutrons in Krypton. Krypton is a chemical element with atomic number 36 which means there are 36 protons in its nucleus.Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z.The total electrical charge of the nucleus is therefore +Ze, where e (elementary … WebStudy with Quizlet and memorize flashcards containing terms like How many significant figures does the number 48.050 have?, The answer to the calculation below with the correct number of significant figures is? 3.42 + (45.96/0.21), The answer to the calculation below with the correct number of significant figures is? 67.2(45.67-44.98) and more.
Platinum - Wikipedia
Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "silver". Platinum is a member of the platinum group of elements and group 10 of the … See more Physical Pure platinum is a lustrous, ductile, and malleable, silver-white metal. Platinum is more ductile than gold, silver or copper, thus being the most ductile of pure metals, but it is less malleable … See more Early uses Archaeologists have discovered traces of platinum in the gold used in ancient Egyptian burials as … See more Of the 218 tonnes of platinum sold in 2014, 98 tonnes were used for vehicle emissions control devices (45%), 74.7 tonnes for jewelry (34%), 20.0 tonnes for chemical … See more • Chelated platinum • Iron–platinum nanoparticle • List of countries by platinum production See more Halides Hexachloroplatinic acid mentioned above is probably the most important platinum compound, as it … See more Platinum, along with the rest of the platinum-group metals, is obtained commercially as a by-product from nickel and copper mining and processing. During electrorefining of copper, noble metals such as silver, gold and the platinum-group metals as … See more According to the Centers for Disease Control and Prevention, short-term exposure to platinum salts may cause irritation of the eyes, nose, and throat, and long-term exposure may cause both respiratory and skin allergies. The current OSHA standard … See more WebMar 22, 2024 · The atomic number (represented by the ... will have two electrons. In the chemical classroom, the proton count will always be … growth etf canada
The chemical elements of the periodic table sorted by density - Lenntech
WebNov 21, 2024 · Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. The chemical symbol for Platinum is Pt. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. WebChemistry 2.3. Write the symbol for each of the following ions: (a) the ion with a 1+ charge, atomic number 55, and mass number 133. (b) the ion with 54 electrons, 53 protons, and 74 neutrons. (c) the ion with atomic number 15, mass number 31, and a 3− charge. (d) the ion with 24 electrons, 30 neutrons, and a 3+ charge. Click the card to flip ... filter integrity testing bubble point