Yttrium

The atomic number=39.

The symbol name=Y.

The melting point=1522.

The boiling=3338.

Yttrium ignite in air. It's a rare earth mineral. Moon rocks contain Yttrium. It's used as a phospher to produce the red color in the television. Yttrium was found in Finland discovered by Johann Gradolin. The state at room temperature is a solid.