Tin(II) sulfide Tin(II) sulfide Tin(II) sulfide is a chemical compound of tin and sulfur. The chemical formula is SnS. Its natural occurrence concerns herzenbergite (α-SnS), a rare mineral. At elevated temperatures above 905K, SnS undergoes a second order phase transition to β-SnS (space group: cmcm, No. 63). in recent years, it has become evident that a new polymorph of SnS exist based upon the cubic crystal system, π-SnS (space group: P23, No. 198). Tin(II) sulfide can be prepared by reacting tin with sulfur, or tin(II) chloride with hydrogen sulfide. Tin(II) sulfide is a dark brown or black solid, insoluble in water, but
Chinese pre-wedding customs food, such as peanuts and dates (in Chinese, the word for "date" is a near homonym of "early", while "peanut" is "birth"). This is normally presented on the wedding day, with the wishes of giving birth to a child early in the marriage. Candles and paper cut "Double Happiness" are often seen on a wedding day as well. The bride price, which is given by the groom's family to the bride's family, varies from region to region. In Southern China, the bride price is much higher than in Northern China. After the betrothal gifts and bride price are negotiated and