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The elements with atomic numbers between 57 and 71 are called lanthanoids (or lanthanides).
71 degrees F is 21.7 degrees C , that is comfortable to hot
The SR-71 can reach an altitude of 80,000 feet. This is in the stratosphere portion of the Earth s atmosphere.
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71 years old
The atomic number is determined by the number of protons, so the base element is tungsten. The net charge is the number of protons minus the number of electrons, so the overall symbol is W with a 6+ superscript.
An element's atomic number gives its number of protons. Lutetium's atomic number is 71. Thus, it has 71 protons.
Tellurium-123 has 52 protons and 71 neutrons.
Indium: 49 protons/electrons, 66 neutronsTin: 50 protons/electrons, 69 neutronsAntimony: 51 protons/electrons, 71 neutrons
The atomic number of an element is the number of protons in the nucleus. For the element Lu (lutetium), the atomic number is 71. The atomic mass number is the sum of the number of protons and neutrons in the nucleus. Therefore, an isotope of Lu with 106 neutrons would have an atomic mass number of 177 (71 protons + 106 neutrons = 177).
The SR-71 had 1 pilot, but had a a crew of two. The other crew member was in charge of the reconnaissance part of the mission.
Protones = 51 Electrones = 49 Neutrones = 70 or 72
The element Silver has 61 neutrons. Its symbol on the Periodic Table is 'Ag'.
Brief description: pure metal lutetium has been isolated only in recent years and is one of the more difficult to prepare. It can be prepared by the reduction of anhydrous LuCl3 or LuF3 by an alkali or alkaline earth metal. The metal is silvery white and relatively stable in air. It is a rare earth metal and perhaps the most expensive of all rare elements. It is found in small amounts with all rare earth metals, and is very difficult to separate from other rare elements
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71 equals 71
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