in pure quantities, yes. in general atmosphere, no.
ya, life can not survive in hydrogen atmosphere
Hydrogen chloride is not toxic, but it is highly acidic and can cause serious chemical burns.
NO. Hydrogen gas is non-toxic. However, it can displace oxygen (and if hot enough burn in it) and thus can be an asphynxant in large quantities. But hydrogen by it self is not toxic at all.
Methyl mercury is more toxic
H2 is molecular hydrogen. H2S is hydrogen sulfide and is extremely toxic.
I believe animals use hydrogen the same way humans do. Please improve if needed!
Hydrogen gas is non-toxic but it is highly flammable (or explosive) so it could easily cause you to burn to death; in addition, if you were to breathe pure hydrogen you would die in a few minutes from lack of oxygen.
No. Hydrogen is not toxic.
The question is toxic to what. Not all chemicals which are toxic to humans are toxic to bacteria, and some chemicals which are toxic to bacteria are harmless to humans (which is why we can have antibiotics). There are chemicals (like Hydrogen Sulfide) which are very toxic to mammals that SOME bacteria eat as food. But there are other chemicals like chlorine which are toxic to both humans and bacteria. So the question does not have a simple answer.
NO. Hydrogen gas is non-toxic. However, it can displace oxygen (and if hot enough burn in it) and thus can be an asphynxant in large quantities. But hydrogen by it self is not toxic at all.
There are many elements that are toxic to humans. A few of these elements are: arsenic, mercury, lead, and radium.
Non-Toxic I am 100% Correct
Yes.
Yes, Bromine is toxic
Yes, and if you are curious because of the old wives tell about finding out the sex of a baby- it won't work, but it will splash up and burn you. The fumes are also toxic and will stick up your house.
Phenol is toxic and corrosive.
Jupiter's atmosphere is mostly hydrogen and helium. While not toxic it certainly is not breathable.
No
yes