t-type boron nitride?
479000
unlikely since the nitrogen requires far more electrons than boron can give it for bonding.  \n\nYou get t-type boron halides tho.
361085
There is a wide range of tatanium alloys. Take a look at the  provided link for a list of alloys with links to get detailed descriptions and chemistry (if needed).
752194
Lithium is very reactive, especially as a metal interacting with water. I would classify boron as reactive.
1047499
If it existed, it would be boron pentafluoride, but as far as I know, this is not a stable molecule.\n\nAre you sure you don't mean BrF5 (bromine pentafluoride), which does exist as a stable molecule?
397994
http://www.4qd.co.uk/faq/bmnc3.html   should answer that
94911
Technetium is a chemical element that has the symbol Tc and the atomic number 43. Pronounced tek-nee-s(h)ee-um, the chemical properties of this silvery grey, radioactive, crystalline transition metal are intermediate between rhenium and manganese. Its short-lived isotope Tc-99m is used in nuclear medicine for a wide variety of diagnostic tests. Tc-99 is used as a gamma ray-free source of beta particles, and its pertechnetate ion (TcO4-) could find use as an anodic corrosion inhibitor for steel.\n\nDmitri Mendeleev predicted many of the properties of element 43, which he called ekamanganese, well before its actual discovery (see Mendeleev's predicted elements). In 1937 its isotope Tc-97 became the first element to be artificially produced, hence its name (from the Greek τεχνητος, meaning "artificial"). Most technetium produced on Earth is a by-product of fission of uranium-235 in nuclear reactors and is extracted from nuclear fuel rods. No isotope of technetium has a half-life longer than 4.2 million years (Tc-98), so its detection in red giants in 1952 helped bolster the theory that stars can produce heavier elements. On earth, technetium occurs naturally only in uranium ores as a product of spontaneous fission; the quantities are minute but have been measured.\n\nNotable characteristics\nTechnetium is a silvery-grey radioactive metal with an appearance similar to platinum. However, it is commonly obtained as a grey powder. Its position in the periodic table is between rhenium and manganese and as predicted by the periodic law its properties are intermediate between those two elements. This element is unusual among the lighter elements because it has no stable isotopes and is therefore extremely rare on Earth.\n\nThe metal form of technetium slowly tarnishes in moist air. Its oxides are TcO2 and Tc2O7. Under oxidizing conditions technetium (VII) will exist as the pertechnetate ion, TcO4-. Common oxidation states of technetium include 0, +2, +4, +5, +6 and +7. When in powder form technetium will burn in oxygen. It dissolves in aqua regia, nitric acid, and concentrated sulfuric acid, but it is not soluble in hydrochloric acid. It has characteristic spectral lines at 363 nm, 403 nm, 410 nm, 426 nm, 430 nm, and 485 nm.\n\nThe metal form is slightly paramagnetic, meaning its magnetic dipoles align with external magnetic fields even though technetium is not normally magnetic. The crystal structure of the metal is hexagonal close-packed. Pure metallic single-crystal technetium becomes a type II superconductor at 7.46 K; irregular crystals and trace impurities raise this temperature to 11.2 K for 99.9% pure technetium powder. Below this temperature technetium has a very high magnetic penetration depth, the largest among the elements apart from niobium.\n\n\nApplications\n\nNuclear medicine\nTc-99m ("m" indicates that this is a metastable nuclear isomer) is used in radioactive isotope medical tests, for example as a radioactive tracer that medical equipment can detect in the body. It is well suited to the role because it emits readily detectable 140 keV gamma rays, and it has a short half-life of 6.01 hours (meaning it has almost completely decayed to Tc-99 in 24 hours). In the book Technetium by Klaus Schwochau, 31 different radiopharmaceuticals based on Tc-99m are listed for imaging and functional studies of the brain, myocardium, thyroid, lungs, liver, gallbladder, kidneys, skeleton, blood and tumors.\n\nImmunoscintigraphy incorporates Tc-99m into a monoclonal antibody, an immune system protein capable of binding to cancer cells. A few hours after injection, medical equipment is used to detect the gamma rays emitted by the Tc-99m; higher concentrations indicate where the tumor is. This technique is particularly useful for detecting hard to find cancers, such as those affecting the intestine. These modified antibodies are sold by the German company Hoechst under the name Scintium.\n\nWhen Tc-99m is com
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Although there is a general trend toward an increase in the first ionization energy as we go from left to right across this row, there are two minor inversions in this pattern. The first ionization energy of boron is smaller than beryllium, and the first ionization energy of oxygen is smaller than nitrogen.\n\nTo read about why, follow the link. It's really hard to explain
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Carbon (diamond) Silicon Germanium.\nMany more with doping and compounds\n\nhttp://en.wikipedia.org/wiki/List_of_semiconductor_materials
1011324
As far as I know, N and Br can form:\n\n- a bromonium nitride R2N-...Br+:\nresult of organic nitride reacting with dibromide, where R = organic radical.\nI think this kind of compound is similar to what is called chloramine ( R2N-Cl), so the N-Br bond would be a polar covalent bond (not a pure ionic bond because not a pure salt, nor a pure covalent bond.). I would say it is a covalent bond strongly polarised;\n\n- an ammonium bromide R4N+...Br- : ionic bond (salt), not covalent at all.
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Dr Dayan Ban\n\ndayan.ban@nrc-cnrc.gc.ca\n\nÉdifice M-50\nInstitut des sciences des microstructures\nConseil national de recherches Canada\n1200, chemin Montréal\nOttawa (Ontario) K1A 0R6\n\nTéléphone : (613) 998-9411\nTélécopieur : (613) 990-0202
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http://en.wikipedia.org/wiki/Bipolar_junction_transistor
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Five (5). \n\nMore details:\n\nName: Boron\nSymbol: B\nAtomic Number: 5\nAtomic Mass: 10.811 amu\nMelting Point: 2300.0 °C (2573.15 K, 4172.0 °F)\nBoiling Point: 2550.0 °C (2823.15 K, 4622.0 °F)\nNumber of Protons/Electrons: 5\nNumber of Neutrons: 6\nClassification: Metalloid\nCrystal Structure: Rhombohedral\nDensity @ 293 K: 2.34 g/cm3\nColor: brownish
97864
yes, with an alloy or equal or lower melting point
138848
Here is one example ,\n\nAgNO3(aq) + NaCl(aq)-> AgCl(s)white precipitate + NaNO3(aq)
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http://www.bccresearch.com/advmat/GB212R.html
152465
Umm,.. hmm.  You should probably google this, keyword: superconductors.  Its not really a new discovery.
46304
Itanium\nItanium 2\nPentium M\nPentium 4EE, 4E\nEM64T\nPentium EE 955