If there is almost no upper limit for the size of an hydrogen bomb?

Question

can humans make one that can destroy our planet completely

Answer 1

Probably the most effective way to try and end the human race would be to use a number of atomic bombs to blow up all the nuclear power plants. That way the explosive force of the bombs would spread the slowly decaying radioactive material in the power plants around the world.

  The range of destruction would probably be enough to take out a large percentage of the population of the earth.

  But to actually break up the planet. Not possible.

Answer 2

The largest H bomb ever detonated was a 60 megaton one, by the USSR, and it was part of a proposed 100 megaton bomb, but the seismic disturbance created dissuaded them from trying the bigger one.

The size is theoretically limited by the availability of uranium 235, plutonium, and X (which I choose to withhold, for valid reasons). There is potentially enough to destroy the planet, but it is impossible to assemble it all. As things stand, there are enough nuclear warheads to produce a "nuclear winter", following firestorms, which could wipe out human civilisation: a sobering thought!

Answer 3

asking all these h-bomb questions is a sure way to get on a government security watch list like fbi or cia.

Answer 4

There is no upper limit to the explosive power of the H-bomb.  

In the first stage of a bomb, uranium-235 releases a burst of x-rays.  This burst of x-rays from an h-bomb can be refocused onto a second piece of lithium deuteride creating a third explosion.  One could stack lithium-deuteride side by side and create a hydrogen bomb of unimaginable magnitude.  The largest h-bomb ever built was a two stage bomb detonated by the USSR in 1961.

Answer 5

Hehe B. I don't think he want's to actually make one.

Also, you have already posted the same question and we have already answered you.