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  • For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be<div

For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be

Option: 1

mercury


Option: 2

tin


Option: 3

sodium


Option: 4

magnesium.


Answers (1)

best_answer

 

Order of melting points -

The transition elements (other than Zn, Hg, Cd) have high melting and boiling points.With some exceptions, when we move from left to right in a period, melting point increases till middle (Cr) and after that, it starts to decrease.

- wherein

Mn  and  Tc  are the exceptions to this trend.

 

 Mercury can be used in such case as it exists as liquid at room temprature 

 

Posted by

Riya

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