Which element remain liquid at a solid room temperature
The Correct Answer and Explanation is:
The element that remains liquid at solid room temperature is mercury (Hg).
Mercury is unique among metals because, unlike most metals that are solid at room temperature, it is a liquid at temperatures up to around 356 degrees Fahrenheit (about 180 degrees Celsius). This is due to its relatively weak metallic bonds. These bonds are not strong enough to hold the mercury atoms tightly together at room temperature, which is why it stays in a liquid state.
Mercury’s low melting point (it melts at around -38.83 degrees Celsius) makes it useful in various applications, particularly in thermometers, barometers, and other scientific instruments. The liquid form allows mercury to flow smoothly in these devices, providing accurate readings of temperature and pressure. In addition, mercury is highly conductive, which makes it useful in some electrical applications, although its toxicity and environmental concerns have limited its use in modern times.
Despite its practical uses, mercury is highly toxic, particularly in its vapor form. It can accumulate in the body over time and cause serious health problems, especially in the nervous system. Therefore, caution is necessary when handling mercury, and alternatives have been developed for many of its previous applications, especially in thermometers and other measuring devices.
In summary, mercury is the only element that remains liquid at room temperature, and its unique physical properties, such as its low melting point and high density, make it useful in several scientific and industrial applications, though its toxicity has led to a decrease in its widespread use.
