Question

The melting point of tungsten metal is ………..${}^\circ C$
$\begin{align}
  & A.3422 \\
 & B3322 \\
 & C.3420 \\
 & D.3430 \\
\end{align}$

Answer 1

Hint: The melting point of a metal is a point at which the body starts melting. It is different for different substances. The chemical substance which is having the highest melting point is tungsten. This property is making tungsten perfect for using as filaments in light bulbs.

Complete step by step answer:
First of all let us take a look at the metal which is known as tungsten or otherwise wolfram. It is denoted as w. tungsten is a white shining silvery metal which has certain properties different from other elements. It is mentioned as an exceptionally strong refractive metal in general. This is the element having the highest melting point among the metals till discovered. It is because of its heaviness and the presence of covalent bonds between the atoms. We all know that as elements are having a higher atomic mass then they are having higher melting points too. This will cause a crystal of tungsten probably into a single molecule. This defines why it is very difficult to extract an atom into the liquid or gas phase. Tungsten are characterised for the lowest coefficient of thermal expansion of any pure metal. The low thermal expansion, high melting point and tensile strength of tungsten is derived from the covalent bonds which are developed between tungsten atoms by the 5d electrons. But it is amazing to tell that even though pure tungsten is a silver-white metal, if it is made into a fine powder will be combustible and also can spontaneously ignite. The melting point of the tungsten metal is given as $3422{}^\circ C$.

So, the correct answer is “Option A”.

Note: The force of attraction between the molecules will be affected by the melting point of a compound. Stronger intermolecular interactions may cause higher melting points. Ionic compounds are usually having high melting points due to the electrostatic forces holding the ions are found to be stronger.