Boron symbol - B. Element of the periodic table zoomed with magnifying glass,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、3
n.SymbolB A nonmetallic element that is amorphous and brown or crystalline and black, and is extracted chiefly from kernite and borax and used in flares, propellant mixtures, nuclear reactor control elements, abrasives, and hard metallic alloys. Atomic number 5; atomic weight 10.811; melting point...
Symbol: B Atomic number: 5 Relative atomic mass (Ar): 10.81 range: [10.806, 10.821] m [see notes g m r] Standard state: solid at 298 K Appearance: black Classification: Semi-metallic Group in periodic table: 13 Group name: (none) Period in periodic table: 2 Block in periodic ta...
Boron big on periodic Table of the Elements with atomic number; symbol and weight with color delimitation on white background vector,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿
Symbol:B Date of discovery:1808 Name origin:Arabic buraq Appearance:brownish Discoverer:Sir Davy, et al. Obtained from:kernite Melting point:2349 K Boiling point:4200 K Density[kg/m3]:2460 Molar volume:4.39 × 10-6m3/mol Protons/electrons:5 ...
Boron has an atomic number of 5 and symbol B. Know the Uses of Boron, Atomic Mass of Boron, Boron Atomic Number, Melting Point and more at BYJU'S
boron: Symbol B. An element ofgroup 13 (formerly IIIB) of the periodictable; a.n. 5; r.a.m. 10.81; r.d.2.34–2.37 (amorphous); m.p. 2300°C;b.p. 2550°C. It forms two allotropes;amorphous boron is a brown powderbut metallic boron is black. Themetallic form is very hard (...
Atomic Symbol: BAtomic Number: 5Atomic Weight: [10.806, 10.821]Isotopes and Abundances: 10B: 19.9 ± 7 %, 11B: 80.1 ± 71 Atm Melting Point: 2,350 °C1 Atm Boiling Point: 4,000 °CCommon Valences: +3Ionic Radii: atomic radius = 87 pm, covalent radius = ...
In the same studies, search-count (a measure of attention) and symbol-count (a measure of encoding skills and short-term memory) consistently showed that boron deprivation impaired response times. However, not all tasks were adversely affected by dietary boron deprivation.(Penland 1994) ...
主要翻译 英语中文 boronn(chemical element)SCSimplified Chinese硼péng TCTraditional Chinese硼 The symbol of the chemical element boron is B. 在这些条目还发现'boron': 在英文解释里: boric 中文: 硼 在单词列表中:Elements in the periodic table,更多…… ...