Science
A metal and a non-metal that exists in liquid state at the room temperature are respectively:
options
- Bromine and Mercury
- Mercury and Iodine
- Mercury and Bromine
- Iodine and Mercury
Metals & Non-Metals
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Answer
Mercury and Bromine
Reason — At room temperature, most metals and non-metals are solids, but there are a few exceptions :
- Mercury (Hg) is the only metal that exists as a liquid at room temperature (around 25 °C) and it remains in liquid form because of its weak metallic bonding and low melting point (−38.83 °C).
- Bromine (Br2) is the only non-metal that is liquid at room temperature. It has a deep reddish-brown color and easily evaporates to form brown fumes.
Thus, the metal and non-metal that exist in the liquid state at room temperature are Mercury and Bromine, respectively.
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Related Questions
When 2 mL of sodium hydroxide solution is added to few pieces of granulated zinc in a test tube and then warmed, the reaction that occurs can be written in the form of a balanced chemical equation as :
options
- NaOH + Zn → NaZnO2 + H2O
- 2NaOH + Zn → Na2ZnO2 + H2
- 2NaOH + Zn → NaZnO2 + H2
- 2NaOH + Zn → Na2ZnO2 + H2O
Select from the following a decomposition reaction in which source of energy for decomposition is light:
options
- 2FeSO4 → Fe2O3 + SO2 + SO3
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Carbon compounds :
(a) are good conductors of electricity.
(b) are bad conductors of electricity.
(c) have strong forces of attraction between their molecules.
(d) have weak forces of attraction between their molecules.
The correct statements are:
options
- (a) and (b)
- (b) and (c)
- (b) and (d)
- (a) and (c)
Consider the following compounds :
FeSO4; CuSO4; CaSO4; Na2CO3
The compound having maximum number of water of crystallisation in its crystalline form in one molecule is :
options
- FeSO4
- CuSO4
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