Which of the following metal has the highest melting and boiling point?

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Iron

Gold

Tungsten

Copper

answer is C.

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Detailed Solution

Tungsten metal has the highest melting and boiling point.
The melting point is the temperature at which a solid turns into a liquid, and the process of a solid turning into a liquid is called melting. The boiling point is The temperature at which a liquid turns into a gas, and the process of a liquid turning into a solid at this temperature is known as boiling. The metal with the highest melting point among those mentioned is tungsten at 3422℃ and 5660℃ as the boiling point. Therefore, it is utilised to create bulb filaments because it has a high melting point due to strong metallic bonds between tungsten atoms by the 5d electrons.

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