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[[Magnesium]] adalah unsur paling melimpah kesebelas berdasarkan massa dalam [[tubuh manusia]]; ionnya penting bagi semua kehidupan [[Sel (biologi)|sel]]. Mereka memainkan peran penting dalam menggerakkan senyawa [[polifosfat]] biologis penting seperti [[Adenosin trifosfat|ATP]], [[DNA]], dan [[RNA]]. Ratusan [[enzim]] memerlukan ion magnesium agar dapat berfungsi. Magnesium juga merupakan ion logam pada pusat [[klorofil]], sehingga merupakan bahan tambahan yang umum digunakan dalam [[pupuk]].<ref>{{cite web|url=http://www.mg12.info|title=Magnesium in health}}</ref> Senyawa magnesium digunakan dalam bidang medis sebagai [[pencahar]], antasida (misal: [[susu magnesia]]), dan sejumlah situasi yang memerlukan stabilisasi eksitasi [[saraf]] abnormal dan stabilisasi kejang-kejang pembuluh darah (misal: perawatan [[eklampsia]]).
 
<!--DespiteMeskipun its prevalence in the environment,prevalensi [[aluminium]] saltsdi arelingkungan notcukup knowntinggi, tobelum bediketahui usedmanfaat bygaram anyaluminium formbagi ofkehidupan, life.namun Inkeberadaannya keepingdapat withditerima itsdengan pervasiveness, it is well toleratedbaik byoleh plantstanaman andmaupun animalshewan.<ref name=Ullmann>{{cite book |doi=10.1002/14356007.a01_527.pub2 |title=Aluminum Compounds, Inorganic}}</ref> BecauseOleh ofkarena their prevalencekelazimannya, potentialpotensi beneficialmanfaat (oratau otherwise)peran biologicalbiologis roles ofsenyawa aluminium compounds aretetap ofmenjadi continuingdaya interesttarik.
 
Silicon[[Silikon]] ismerupakan anunsur essentialpenting elementdalam in biologybiologi, althoughmeskipun only tiny traces ofhanya itsejumlah appearrenik tokecil beyang requireddibutuhkan byoleh animalshewan,<ref name="Niels">{{cite journal|doi=10.1146/annurev.nu.04.070184.000321|pages =21–41|journal=Annual Review of Nutrition|volume=4|year=1984|title=Ultratrace Elements in Nutrition|first=Forrest H.|last=Nielsen|pmid=6087860}}</ref> howevernamun variousberagam [[seaterumbu spongeskarang]] needmemerlukan siliconsilikon inuntuk ordermembentuk to have structurestrukturnya. ItIni islebih muchpenting morebagi important to the metabolism ofmetabolisme plantstumbuhan, particularlyterutama manyuntuk grassesrerumputan, anddan [[silicicasam acidsilikat]] (asuatu typejenis of silicasilika) formsmembentuk thedasar basisderet ofkulit the striking array of protective shells of the microscopicpelindung [[diatom]]s mikroskopis.
 
[[Fosforus]] penting bagi kehidupan. Sebagai fosfat, ia merupakan komponen [[DNA]], [[RNA]], [[Adenosine triphosphate|ATP]], dan juga [[fosfolipid]] yang membentuk seluruh membran sel. Untuk menunjukkan hubungan antara fosforus dan kehidupan, fosforus elementer pertama kali diisolasi dari urin manusia, dan abu tulang (''bone ash'') merupakan sumber fosfat penting pada awalnya. Mineral fosfat adalah fosil. Fosfat kadar rendah penting untuk membatasi pertumbuhan beberapa sistem akuatik. Saat ini, manfaat penting bahan kimia berbasis fosforus secara komersial adalah produksi [[pupuk]], untuk menggantikan fosforus yang diserap tanaman dari tanah.
Phosphorus is essential for life. As phosphate, it is a component of [[DNA]], [[RNA]], [[Adenosine triphosphate|ATP]], and also the [[phospholipid]]s that form all cell membranes. Demonstrating the link between phosphorus and life, elemental phosphorus was historically first isolated from human urine, and bone ash was an important early phosphate source. Phosphate minerals are fossils. Low phosphate levels are an important limit to growth in some aquatic systems. Today, the most important commercial use of phosphorus-based chemicals is the production of [[fertilizer]]s, to replace the phosphorus that plants remove from the soil.
 
<!--Sulfur is an [[essential element]] for all life, and is widely used in biochemical processes. In metabolic reactions, sulfur compounds serve as both fuels and respiratory (oxygen-replacing) materials for simple organisms. Sulfur in organic form is present in the vitamins [[biotin]] and [[thiamine]], the latter being named for the Greek word for sulfur. Sulfur is an important part of many enzymes and in antioxidant molecules like [[glutathione]] and [[thioredoxin]]. Organically bonded sulfur is a component of all proteins, as the [[amino acid]]s [[cysteine]] and [[methionine]]. [[Disulfide]] bonds are largely responsible for the mechanical strength and insolubility of the protein [[keratin]], found in outer skin, hair, and feathers, and the element contributes to their pungent odor when burned.
 
Elemental chlorine is extremely dangerous and poisonous for all lifeforms, and is used as a [[pulmonary agent]] in [[chemical warfare]]; however, chlorine is necessary to most forms of life, including [[human]]s, in form of [[chloride]] ions.
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