Bromine
<p style="color:#dbdbdb ;padding:20px; border-left:5px solid #AD1D02">There are many elements in the periodic table that are known for their characteristics, the story behind its discovery, their utility and so on. However, the strange fact is that there is an element which is well recognised for its odour. The element is Bromine. Bromine is a chemical element with symbol Br and atomic number 35. In its elemental form, Bromine is a heavy, volatile, mobile, dangerous, reddish–brown liquid. Bromine does not occur freely in nature and is as colourless as table salt. Bromine is a rare element and is about three–quarters in the earth’s crust. But, the high solubility of bromide ion has caused its accumulation in the oceans. It is derived from the Greek word ‘bromos’, which means stench or smell. There is a red vapour of Bromine that has a strong unpleasant odour, which irritates the eyes and the throat.</p>
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Boron
<p style="color:#dbdbdb ;padding:20px; border-left:5px solid #C7BFB4">Most of the periodic elements we know are either chemically active or are involved in various different processes and procedures. However, there is one such element which is a tough element and is used as an essential nutrient for all the green plants. It is Boron. With a symbol ‘B’ and atomic number 5, Boron is very hard and resistant to heat. It belongs to Group 13 element, which means it is a borderline between the category of metals and non–metals. In simple words, Boron is semi–metallic and hence, it is rather a semiconductor rather than a metallic conductor. The element is chemically closer to silicon. It is the second hardest of all the elements in its crystalline form. Also, of all the elements, only about 11 elements have a higher melting point than Boron. The element is unusual as its atoms were not made by nuclear fusion within the stars but by nuclear fusion in cosmic–ray collisions. As it was produced in this cosmic–ray spallation, it is not abundantly found in both, the solar system and the earth’s crust. Boron, classified as a metalloid is not available naturally on earth.</p>
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Beryllium
<p style="color:#dbdbdb ;padding:20px; border-left:5px solid #986435">Of all the elements that are available in abundance or scarce, there is a rare element in both the universe and in the earth’s crust. The chemical element is Beryllium. With a symbol ‘Be’ and the atomic number 4, it is one of the lightest of all the light metals and has one of the highest melting points. The element is non–magnetic, has superior thermal conductivity, is resistant to concentrated nitric acid and also resists oxidation in air in normal temperatures. At one point of time, it was known as glucinum meaning ‘sweet’ as many of its compounds are sugary in taste. Beryllium is derived from the Greek word of the mineral beryl, ‘beryllos’. The element is steel–grey, strong, lightweight and a brittle alkaline earth metal.</p>
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