Nitrogen, is the most reactive gas that can be found abundantly in the air...
Nitrogen gas present in air doesnt react easily with metals.
Metal's suck, Go lick bannana stick
Carbon Dioxide . :)
Hydrogen
hydrogen
Several gasses can react with metals, but due to the fact that you are asking for a single gas, the most likely answer that you will be looking for is Oxygen. Oxygen reacts with many metals (and non-metals).
Acids react with metals. Metals are themselves basic in nature. Metals displaces hydrogen from acids to liberate hydrogen gas.
Oxygen
When mixed with certain metals, a hydrogen gas is produced.
Because they are able to dissolve and are more reactive than hydrogen
Several gasses can react with metals, but due to the fact that you are asking for a single gas, the most likely answer that you will be looking for is Oxygen. Oxygen reacts with many metals (and non-metals).
Many metals react with strong acids to produce hydrogen gas.
Oxygen
Fluorine gas is one of the most reactive elements that exist and it will react with most metals.
oxygen
Carbon dioxide
Acids react with metals. Metals are themselves basic in nature. Metals displaces hydrogen from acids to liberate hydrogen gas.
Oxygen
HCl is an strong acid, gas, reacts with metals NaCl is a neutral salt, crystalline solid, stable to most metals,
I am assuming you are mixing Magnesium and Zinc metals with an acid which would produce Hydrogen gas.
When mixed with certain metals, a hydrogen gas is produced.
It depends which metal you are referring to.