1. Mercury is liquid at room temperature
2. It is a poison
3. Mercury vapour -gas that forms over liquid mercury is VERY toxic
4. Used for welding
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When mercury(II) oxide (HgO) is heated, it decomposes into mercury and oxygen. The atoms present in the compound at the start of the reaction are mercury (Hg) and oxygen (O), and these same atoms will be present at the end of the reaction, just in different molecular forms.
The word equation for the breakdown of solid mercury(II) oxide when heated is: Mercury(II) oxide --> Mercury + Oxygen.
The chemical formula for Mercury (III) oxide is Hg2O.
Earthquakes can be measured on different scales because there are different ways to quantify their size and impact. The two commonly used scales are the Richter scale and the moment magnitude scale, which are based on different aspects of the earthquake, such as the amplitude of seismic waves or the total energy released. This is why you may see the same earthquake measured with different magnitudes on different scales.
Two silver atoms are needed to form an ionic bond with one oxygen atom. This is because each silver atom can donate one electron to the oxygen atom to achieve a stable electron configuration.