What is the melting point of Gallium ?

Which is the heaviest metal ?

Who was the person who grouped three elements and termed as triad ?

By whom the elements are classified into metals and non-metals ?

Bronze is formed by the combination of :

Who proposed periodic table ?

In Mendeleev's periodic table, all the elements are sorted in the periodic functions of their :

When did Lothar mayer classified the elements ?

Sulphur reacts with hydrogen to give hydrogen sulphide. The odour of hydrogen sulphide is :

Name the metal which is liquid in room temperature ?