{"id":7852,"date":"2018-05-28T14:11:15","date_gmt":"2018-05-28T14:11:15","guid":{"rendered":"https:\/\/www.experimentoscientificos.es\/?page_id=7852"},"modified":"2021-03-05T11:42:43","modified_gmt":"2021-03-05T11:42:43","slug":"boro","status":"publish","type":"page","link":"https:\/\/www.experimentoscientificos.es\/en\/boro\/","title":{"rendered":"Boron"},"content":{"rendered":"

The chemical element Boron, with the formula B, is element number 5 of the Periodic Table<\/a>Its atomic number is therefore 5, and it has an atomic weight of 10,811, with 5 protons and 5 neutrons in the nucleus. Its atom<\/a>\u00a0has three valence elements and behaves as a non-metal. It is the only non-metal element that has less than 4 electrons in the last shell.<\/p>\n

BORON PROPERTIES<\/h2>\n

Atomic mass:<\/strong> 10,811(7) u
\nDensity<\/a>:<\/strong> 2460 kg\/m3<\/sup>
\nAtomic radius (calc)<\/strong>: 87 pm (Bohr radius)
\nGroup, period, block:<\/strong> 13, 2, p
\nName, symbol, number:<\/strong> Boron, B, 5
\nOrdinary status:<\/strong>\u00a0Non-magnetic solid
\nMelting point<\/a>: <\/strong>2349K (2076\u00baC)
\n<\/strong>Boiling point<\/a>:<\/strong> 4200 K (3927 \u00b0C)
\nSpecific heat<\/a><\/strong>: 1026 J\/(K-kg)<\/p>\n

n\u00baCAS: <\/strong>7440-42-8
\n<\/strong>EINECS no: <\/strong>231-151-2<\/p>\n

USES OF BORO<\/h2>\n

Boron as an element is mainly used in the metallurgical industry. It is very reactive with oxygen and nitrogen, so one of its uses is as a metallurgical degassing agent. Boron increases high temperature resistance, and is therefore included in steel alloys. It is therefore also used in atomic reactors and high temperature instrumentation.<\/p>\n

Boron compounds, including borax and boric acid, are widely used in domestic and industrial applications. Borax is a component of detergent, liquid for contact lenses and is used in silver soldering. Boric acid, on the other hand, is a component of many insecticides due to its effectiveness against cockroaches and insects.<\/p>\n

Boron constitutes 0.001% in the earth's crust. It has never been found free. It is also present in seawater at a few parts per million (ppm).<\/p>\n

BORON EXPERIMENTS<\/h2>\n

With borax you can see how to make a slime.<\/p>\n

How to make a Slime<\/a><\/p><\/blockquote>\n