Pengguna:Pomadgw/Draft

Di sini adalah draft dari suatu halaman/bagian halaman yang akan saya buat/sunting, tapi tidak ada waktu untuk menyelesaikannya. Mohon pendapatnya dengan mengirimkan kritik dan saran.'

Tabel periodik (standar) (en)

Ini adalah tampilan sederhana dari tabel periodik unsur-unsur dan berisi nomor atom dan simbol tiap unsur. Tabel periodik unsur-unsur kimia adalah tabel yang dibuat untuk mengelompokkan unsur-unsur berdasarkan sifat-sifatnya. Walaupun sudah ada perintis tabel ini, tapi penemuan ini umumnya ditemukan oleh Dmitry Mendeleyev pada tahun 1869. Mendeleyev memaksudkan tabelnya agar dapat menggambarkan kecenderungan sifat unsur-unsur secara berulang ("periodik")

Golongan #	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Period
1	1 H																	2 He
2	3 Li	4 Be											5 B	6 C	7 N	8 O	9 F	10 Ne
3	11 Na	12 Mg											13 Al	14 Si	15 P	16 S	17 Cl	18 Ar
4	19 K	20 Ca	21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn	31 Ga	32 Ge	33 As	34 Se	35 Br	36 Kr
5	37 Rb	38 Sr	39 Y	40 Zr	41 Nb	42 Mo	43 Tc	44 Ru	45 Rh	46 Pd	47 Ag	48 Cd	49 In	50 Sn	51 Sb	52 Te	53 I	54 Xe
6	55 Cs	56 Ba	Lantanida	72 Hf	73 Ta	74 W	75 Re	76 Os	77 Ir	78 Pt	79 Au	80 Hg	81 Tl	82 Pb	83 Bi	84 Po	85 At	86 Rn
7	87 Fr	88 Ra	Aktinida	104 Rf	105 Db	106 Sg	107 Bh	108 Hs	109 Mt	110 Ds	111 Rg	112 Uub	113 Uut	114 Uuq	115 Uup	116 Uuh	(117) (Uus)	118 Uuo
* Lantanida			57 La	58 Ce	59 Pr	60 Nd	61 Pm	62 Sm	63 Eu	64 Gd	65 Tb	66 Dy	67 Ho	68 Er	69 Tm	70 Yb	71 Lu
** Aktinida			89 Ac	90 Th	91 Pa	92 U	93 Np	94 Pu	95 Am	96 Cm	97 Bk	98 Cf	99 Es	100 Fm	101 Md	102 No	103 Lr

Warna dalam tabel periodik memperlihatkan kategori unsur Logam Metaloid Nonlogam Logam alkali Logam alkali tanah Logam transisi dalam Logam transisi Logam lain Nonlogam lain Halogen Gas mulia Lantanida Aktinida (Tipe tidak diketahui)
Warna nomor atom memperlihatkan wujud materi saat STP (0 °C dan 1 atm) Padat Cair Gas Tidak diketahui	Border memperlihatkan persediaan di alam Primordial (sudah ada sejak sebelum bumi terbentuk) Dari peluluhan inti Sintetis (Belum ditemukan)

Besi(III) oksida (Bagian Penggunaan)

Penyimpanan magnetik

Besi(III) oksida magnetik sering digunakan dalam penyimpanan magnetik, seperti di lembaran magnetik pada floppy disk dan kaset. These consist of a thin sheet of PET film, coated with iron(III) oxide. The particles can be magnetised to represent binary data. Magnetic ink character recognition (MICR) also uses iron(III) oxide compounds, suspended in an ink which can be read by special scanning hardware.

The majority of recorded information on earth (such as text and photographs) is stored in the form of magnetization patterns on a thin layer of iron(III) oxide. This is probably because the cost per bit of iron-based magnetic media is currently far less than the cost per bit of any known alternative, such as optical discs, paper books, or microfilm. More text and photos are stored on magnetic media than all the paper books and paper photographs in the world.

Polishing

A very fine powder of ferric oxide is known as jeweller's rouge, red rouge, or simply rouge. It is used to put the final polish on metallic jewellery and lenses, and historically as a cosmetic.

Rouge cuts more slowly than some modern polishes, such as cerium(IV) oxide, but is still used in optics fabrication and by jewelers for the superior finish it can produce. When polishing gold, the rouge slightly stains the gold, which contributes to the appearance of the finished piece. Rouge is sold as a powder, paste, laced on polishing cloths, or solid bar (with a wax or grease binder). Other polishing compounds are also often called "rouge", even when they do not contain iron oxide. Jewelers remove the residual rouge on jewelry by use of ultrasonic cleaning.

Chemical

Besi(III) oksida is used in the production of pure iron in a blast furnace. Besi(III) oksida juga digunakan dalam suatu reaksi eksotermik yang dinamakan reaksi termit.

2 Al + Fe₂O₃ → 2 Fe + Al₂O₃

Pigment

Iron(III) oxide is also used as a pigment, under names Pigment Brown 6, Pigment Brown 7, and Pigment Red 101. Some of them, e.g. Pigment Red 101 and Pigment Brown 6, are Food and Drug Administration (FDA)-approved for use in cosmetics.

Biomedical

Nanoparticles of iron(III) oxide are biocompatible, non-toxic, are chemically active on their surface, and some are magnetic . They find wide use in biomedical applications. Can be used as contrast agents in magnetic resonance imaging, in labeling of cancerous tissues, magnetically controlled transport of pharmaceuticals, localized thermotherapy (where the tissue is labeled by iron oxide nanoparticles, then heated by application of AC field to particles), and preparation of ferrofluids.