# Sèng

|  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- |
|

|  |  |
| --- | --- |
| 30 | tembaga ← sèng → galium |
| - ↑ Zn ↓ Cd |

|  |
| --- |
| Tabel périodik |

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| Katrangan Umum Unsur |
| Jeneng, Lambang, Nomer atom | sèng, Zn, 30 |
| Dhèrèt kimia | logam transisi |
| Golongan, Période, Blok | 12, 4, d |
| Panampilan | klawu mudha kebiruan  |
| Massa atom | 65,409(4) g/mol |
| Konfigurasi elektron | [Ar] 3d10 4s2 |
| Cacahing èlèktron saben kulit | 2, 8, 18, 2 |
| Ciri-ciri fisik |
| Fase | padat |
| Massa jenis (watara suhu kamar) | 7,14 g/cm³ |
| Massa jenis cair ing titik lebur | 6,57 g/cm³ |
| Titik lebur | 692,68 K (419,53 °C, 787,15 °F) |
| Titik umob | 1180 K (907 °C, 1665 °F) |
| Kalor peleburan | 7,32 kJ/mol |
| Kalor panguapan | 123,6 kJ/mol |
| Kapasitas kalor | (25 °C) 25,390 J/(mol·K) |
|

Tekanan uap| *P*/Pa | 1 | 10 | 100 | 1 k | 10 k | 100 k |
| ing *T*/K | 610 | 670 | 750 | 852 | 990 | (1185) |

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| Ciri-ciri atom |
| Struktur kristal | heksagonal |
| Bilangan oksidasi | 2 (Oksida amfoter) |
| Elektronegativitas | 1,65 (skala Pauling) |
| Energi ionisasi | pertama: 906,4 kJ/mol |
| ke-2: 1733,3 kJ/mol |
| ke-3: 3833 kJ/mol |
| Jari-jari atom | 135 pm |
| Jari-jari atom (terhitung) | 142 pm |
| Jari-jari kovalen | 131 pm |
| Jari-jari Van der Waals | 139 pm |
| Lain-lain |
| Sifat magnetik | diamagnetik |
| Resistivitas listrik | (20 °C) 59,0 nΩ·m |
| Konduktivitas termal | (300 K) 116 W/(m·K) |
| Ekspansi termal | (25 °C) 30,2 µm/(m·K) |
| Kacepetan swara (ing wujud kawat) | (suhu kamar) (kawat tergulung) 3850 m/s |
| Modulus Young | 108 GPa |
| Modulus rigiditas | 43 GPa |
| Modulus ruah | 70 GPa |
| Nisbah Poisson | 0,25 |
| Skala Mohs | 2,5 |
| Kekerasan Brinell | 412 MPa |
| Isotop |
|

| iso | NA | waktu paruh | DM | DE (MeV) | DP |
| --- | --- | --- | --- | --- | --- |
| 64Zn | 48,6% | Zn stabil kanthi 34 neutron |
| 65Zn | syn | 244,26 hari | ε | - | 65Cu |
| γ | 1,1155 | - |
| 66Zn | 27,9% | Zn stabil kanthi 36 neutron |
| 67Zn | 4,1% | Zn stabil kanthi 37 neutron |
| 68Zn | 18,8% | Zn stabil kanthi 38 neutron |
| 70Zn | 0,6% | Zn stabil kanthi 40 neutron |

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| Referensi |

**Sèng** (utawa **zinc**) iku unsur kimia kanthi lambang kimia **Zn**, nomer atom 30, lan massa atom relatif 65,39.

Sèng ora ana ing alam bébas, nanging sajeroning wangun kaiket. Mineral kang ngandhut sèng ing alam bébas antarané *kalamin, franklinit, smithsonit, willenit* lan *zinkit*.

Sajeroning indhustri zink duwé peran wigati:

* nglapisi wesi utawa waja kanggo nyegah prosès tèyèng
* dipigunakaké kanggo bahan bateré
* zink lan alinasené kanggo cithakan logam, panyepuhan listrik lan metalurgi bubuk
* zink sajeroning wangun oksida kanggo indhustri kosmetik, plastik, karèt, sabun, pigmen sajeroning cèt lan mangsi
* zink sajeroning wangun sulfida kanggo indhustri tabung télévisi lan lampu pendhar
* zink sajeroning wangun klorida kanggo pangawètan kayu.

Sajeroning basa sadina-dina, sèng uga dimaksudaké wujud pelat sèng kang digunakaké minangka bahan yasan.

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| **Golongan** → | **1** | **2** |  | **3** | **4** | **5** | **6** | **7** | **8** | **9** | **10** | **11** | **12** | **13** | **14** | **15** | **16** | **17** | **18** |
| **Période** ↓ |  |
| **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 | \*  | 71 Lu | 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 | \*\*  | 103 Lr | 104 Rf | 105 Db | 106 Sg | 107 Bh | 108 Hs | 109 Mt | 110 Ds | 111 Rg | 112 Cn | 113 Nh | 114 Fl | 115 Mc | 116 Lv | 117 Ts | 118 Og |
|  |
| \* **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 |
| \*\* **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 |

Seri Kimia saka Tabel Périodik| Logam alkali | Alkali tanah | Lantanida | Aktinida | Logam transisi |
| Logam | Metaloid | Nonlogam | Halogen | Gas mulia |