The cation Si4+.
si4 in pinyin.
si4
balls
二十四 Pinyin and tones: er4 shi2 si4
四十三 Pinyin and tones: si4 shi2 san1
Silicon is a non-metal, a metalloid. It would be expected to form covalent bonds. This is born out in practise, no compounds contain Si4+, no compounds contain Si4-, There are some cluster anions of silicon e.g. Si44- in NaSi, Na4Si4
二(er4) 十(shi2) 四(si4) 歲(sui4 or suei4)I am 24 years old: 我是二十四歲; 我(wo3) 是(shi4) 二(er4) 十(shi2) 四(si4) 歲(sui4 or suei4)
In Mandarin Chinese, 48 is pronounced si4 shi2 ba1. And, in Cantonese Chinese, 48 is pronounced si3 sap6 batt3.
An aluminosilicate is any of a variety of silicate minerals in which a proportion of the Si4+ ions are replaced by Al3+, with the excess negative charge being balanced by extra sodium, potassium, or calcium ions.
A 1993-94 Images Four Sport Sudden Impact Alex Rodriguez card #SI4 has a book value of about $5.00 in near/mint -mint condition. Professionally graded cards will sell for more. Condition is important. Common flaws with baseball cards include: rounded edges, creases, off centered, and faded color. Any or all flaws will devalue the card significantly.
一 yi1 二 er4 三 san1 四 si4 五 wu3 六 liu4 七 qi1 八 ba1 九 jiu3 十 shi2