Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Nickel belongs to the transition metals and is hard and ductile. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. For example, the neutron number of uranium-238 is 238-92=146. Mass of 6.022 × 10 23 atoms of nitrogen = 14 grams. Pure germanium is a semiconductor with an appearance similar to elemental silicon. At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust. • The chemical symbol for Arsenic is As. The chemical symbol for Bismuth is Bi. Therefore, we cannot determine the neutron number of uranium, for example. Typical densities of various substances are at atmospheric pressure. The chemical symbol for Chromium is Cr. The chemical symbol for Copper is Cu. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 electrons in the atomic structure. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Other inorganic nitrogen compounds are nitric acid (HNO 3), ammonia (NH 3), the oxides (NO, NO 2, N 2 O 4, N 2 O), cyanides (CN-), etc. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth’s crust and is more common than such metals as tin. Its properties are thus intermediate between those of chlorine and iodine. The chemical symbol for Titanium is Ti. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. Neodymium is a soft silvery metal that tarnishes in air. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. In the periodic table, potassium is one of the alkali metals. Because of its high chemical reactivity, barium is never found in nature as a free element. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. Neutron number plus atomic number equals atomic mass number: N+Z=A. For example, 63Cu (29 protons and 34 neutrons) has a mass number of 63 and an isotopic mass in its nuclear ground state is 62.91367 u. Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Carbon is one of the few elements known since antiquity. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. The chemical symbol for Zinc is Zn. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. For a better experience, please enable JavaScript in your browser before proceeding. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Calculate how much of this gravel is required to attain a specific depth in a cylindrical,  quarter cylindrical  or in a rectangular shaped aquarium or pond  [ weight to volume | volume to weight | price ], Arsenic trioxide, claudetite [As2O3] weighs 3 740 kg/m³ (233.48057 lb/ft³)  [ weight to volume | volume to weight | price | mole to volume and weight | mass and molar concentration | density ], Volume to weight,  weight to volume and cost conversions for Refrigerant R-414B, liquid (R414B) with temperature in the range of -40°C (-40°F) to 71.12°C (160.016°F), A micron per second squared (µm/s²) is a derived metric SI (System International) measurement unit of acceleration. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars. Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure. 4 moles Nitrogen to grams = 56.0268 grams. Mass was no longer considered unchangeable in the closed system. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. Although Carl Wilhelm Scheele and Henry Cavendish had independently done so at about the same time, Rutherford is generally accorded the credit because his work was published first. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. 3 moles Nitrogen to grams = 42.0201 grams.