My Birthday elements
Hydrogen (H) and Cobalt (Co)

Physical characteristics:

Cobalt is hard and ferromagnetic, and silver-white in color. It is a hard, lustrous, brittle element. It is used to make Cobalt-60 is used in medical treatment and food preservation.

Hydrogen is a colorless, tasteless gas. It is a gas at room temperature. Hydrogen is used as fuel, and to make rocket fuel.

Chemical Characteristics:

Cobalt is stable in air and unaffected by water. It is slowly attacked by dilute acids.
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Hydrogen is highly inflammable. It burns with blue flame forming water.

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