On the surface no nuclear explosion no matter the yield could do it, the atmosphere provides insufficient tamping for this and would simply be blown away into space above ground zero. To get enough tamping, the explosion would have to be very deep subsurface, probably hundreds of miles or more into the mantle. We can't drill a hole that deep.
It is currently impossible to blow up the Earth using nuclear weapons as the planet is too large and the energy required would be immense. Additionally, detonating a large number of nuclear weapons on Earth could have catastrophic consequences for all life on the planet.
Nuclear fallout is the residual radioactive material that is dispersed into the atmosphere after a nuclear explosion or radioactive contamination. It can be carried by wind and deposited over large areas, posing a significant health risk to humans and the environment.
I can think of four things that cause sudden changes to the earth's surface: Impact of a large object from space (such as Meteor Crater in Arizona), earthquake, volcanic eruption or explosion (Krakatoa is a prime example), and nuclear explosion (the atomic bomb caused very sudden and complete change to Hiroshima and Nagasaki). Every rain shower causes some change to the earth's surface, but I think you were asking about more dramatic examples.
Nuclear weapons are considered the strongest weapon on Earth for land warfare due to their immense destructive power and ability to cause widespread devastation over large areas.
The biggest bomb was the Tsar bomba, it used around 50MT (megatons) of TNT which is the same as all bombs dropped in WW2 times 10x, it was capable of destroying 30-40 miles of territory without any large deposits of radiation.
A large enough body from space (comet, asteroid, meteor) that did not break up when coming through the Earth's atmosphere; a large sun flare or coronal blast; and a nuclear weapon detonation all have the ability to destroy entire cities and impair electronic communication systems.
You get a rather large explosion.
In a nuclear explosion, a small mass can have enormous destructive power because of the process of nuclear fission, where the nucleus of an atom is split into smaller parts, releasing a large amount of energy in the form of radiation and heat. This process creates a chain reaction that releases more energy exponentially, leading to a massive explosion even from a small amount of fissile material.
No, an asteroid cannot destroy earth, but a large enough asteroid can have devastating effects on the life on Earth
Such an explosion is often referred to as a "7 megaton nuclear explosion." It releases energy equivalent to 7 million tons of TNT and can cause widespread destruction over a large area.
No, a single nuclear bomb cannot destroy Earth's atmosphere. However, a large-scale nuclear war involving numerous bombs could have devastating effects on the atmosphere and potentially lead to long-term environmental consequences.
Enough of either U235 or PU239 to form a critical mass and hence a large explosion
To destroy the planet (as in blow it into pieces), no. But to destroy all live on the surface, yes.
No. A lahar carries far less power than a nuclear bomb. However, large explosive eruptions, which can lead to lahars, can be as strong as or stronger than a nuclear explosion.
To destroy large areas of land. Is one answer. The other is to blackmail other countries into submitting to you.
If blackholes reach the earth the earth will destroy. Blackhole are to large it can eat star easily.
Anything 1 gigaton or larger could accomplish nothing more with its blast than blowing a large portion of the top of the atmosphere off into space. It would require a deeply buried explosion, probably deep in the mantle, to destroy the earth. This would probably require an extraterrestrial impact not a bomb. Such an object would probably have to be far larger than Mars.