There are essentially three different basic types of nuclear weapons:
This is a basic overview of the three different primary weapons, there are many variations and offshoots of these designs.
Specific details on all of these weapons designs are still highly classified.
None.
The UK is estimated to have a stockpile of approximately 160 active nuclear warheads and 225 nuclear warheads in total.
The amount of radiation produced by a nuclear weapon can vary depending on its size and yield. However, a single detonation of a nuclear weapon can produce tens of thousands to millions of rads within the immediate vicinity of ground zero. This level of radiation exposure can be lethal to humans and cause widespread health effects.
Hard to say. Many countries make nuclear weapons behind other countries backs. Some countries are not announcing when they complete testing or development for nuclear warheads, so the world may never know.
You can count them yourself in the related link on The Nuclear Weapon ArchiveA Guide to Nuclear Weapons
Neither. You would say 'Many types of weapons'
theoretically the yield of nuclear weapons is unlimited.
The yield of a nuclear weapon is its energy release, usually expressed in the weight of TNT that would release the same energy (e.g. kilotons, megatons). It depends strongly on type of bomb (fission or fusion) and many design details.
There are over 400 nuclear reactors around the world.
nuclear energy
Your questions asks for an opinion. My opinion is no. The knowledge of how to build a nuclear weapon is out there. There are too many people with different views and values for nuclear weapons to just go away.
There are essentially three different basic types of nuclear weapons:Gun Type Uranium Fission: Weapon consists of two subcritical pieces of U-235 fired at each other at a specific speed to product the supercritical reaction and often time a yield of 10-15 Kt based on amount of fissile material used, and level of design. (Hiroshima Type Design)Plutonium Implosion Design: Weapon consists of normally a sphere of subcritical P-239 that is surrounded by explosives. Upon carefully timed detonation of these explosives surrounding the Plutonium sphere, the Plutonium compresses to a supercritical state and the full yield nuclear detonation occurs. (Nagasaki Type Design)Multi-Stage Thermonuclear Weapon: This design uses the Teller-Ulam design principle. All modern nuclear weapons in the United States Arsenal consist of this design. This weapon utilizes a Fission weapon to detonate a secondary Fusion stage. (Operation Castle Shot Bravo Test Weapon)This is a basic overview of the three different primary weapons, there are many variations and offshoots of these designs.Specific details on all of these weapons designs are still highly classified.