Hydrogen is very flammable to the point of being explosive under the right conditions. It must be kept away from any open flame, However Hydrogen is also less flammable than gasoline. The auto-ignition-point* of hydrogen is 932 degrees Fahrenheit. The auto-ignition-point* of gasoline is only 536 degrees Fahrenheit.
Hydrogen has no danger to humans, although if you breath in too much it will replace the oxygen and you will suffocate and possibly die.
*Autoignition point is the temperature it takes to ignite or spontaneously combust.
hydrogen
As a radioactive chemical element, technetium may be dangerous to humans.
Yes. Molecular hydrogen is highly flammable.
Danger level of hydrogen > 2 Vol% of room air
Both oxygen and hydrogen would be dangerous to fill up a party balloon with. Both of these gasses are extremely flammable, although of the two, hydrogen is by far the worst.
hydrogen
no I am pretty sure that they are not dangerous to humans
Not normally, but Humans are dangerous to them.
Hydrogen is dangerous than Helium because Hydrogen is a stronger gas than Helium.
no I am pretty sure that they are not dangerous to humans
oil tankers are dangerous to humans by the pollution of the environment
As a radioactive chemical element, technetium may be dangerous to humans.
Ibex are dangerous to humans.
Yes. Molecular hydrogen is highly flammable.
Is It dangerous for humans to get pregnant? NO!
Only as dangerous as their humans.
When humans threaten them or their cubs.