Hydra is one of the largest constellations in astronomy.

We went for a picnic to the lake on the weekend.

We had a picnic at the lake over the weekend.

Technetium is one of the most unstable elements in the periodic table.

Where is holmium located in the periodic table?

We will use cadmium in this chemical experiment.

Polonium is one of the radioactive elements.

Scandium is a rare element that exists in very small amounts in the earth's crust.

My main business is project management.

Berkelium is a very rare element in the periodic table.