Question

Which non-metallic element is in liquid form?
A. Carbon
B. Hydrogen
C. Bromine
D. None of the above

Answer 1

Hint: In the periodic table elements are classified into metal, nonmetal and metalloids. Nonmetals are elements that can accept electrons to complete octet. As the boiling point increases, the state changes from gas to solid to liquid.

Complete answer:
Non-metals have high ionization enthalpy and high electronegativity. Due to this property, non-metals usually gain electrons in reaction with other compounds, forming covalent bonds.
The general properties of non-metals are as follows,
The atoms of non-metals are smaller than those of metals. Many properties of non-metals are due to their atomic sizes.
Non-metals show very low electrical conductivities. The low or distinguishes it from metals.
They have high electronegativities. It means the atoms of non-metals have a strong tendency to attract more electrons whereas, metals easily give up one or more electrons to non-metals. Metals therefore form positively charged ions, and metals conduct electricity. Some non-metals are found as gases, some found as solids and one is found as liquid under normal temperature and pressure. whereas, except mercury, all metals are solids at room temperature. Non-metals generally have relatively lower melting and boiling points than metals under normal atmospheric conditions, therefore exist as liquids or gases.
In their solid-state, non-metals are brittle. Therefore, they don’t show malleability and ductility exhibited by metals.
Considering the halogens, fluorine and chlorine are present in the gaseous state, bromine in the liquid and iodine in the solid state. With an increase in the atomic number of the element, the melting and boiling point of halogens increases.
Bromine is a halogen and a nonmetal. It appears as a reddish-brown liquid at room temperature. Carbon and phosphorus are solids and hydrogen are gases.

Hence, the answer to the above question is option C.

Note: Metals are hard. The two exceptions are Sodium and potassium, they are soft. They can be cut using a knife.
Metals exhibit some property like ductility, malleability, and they are sonorous and lustrous. Ductility is the property with which metal can be stretched into wires. Malleability is the property by which they can be drawn into sheets.