Unclear what you mean by largest: physical size or explosive yield?
For size it was the US Ivy Mike device a steel cylinder 80 feet tall and 20 feet in diameter, with 2 foot thick walls. Its yield was 10 megatons.
For yield it was the USSR Tzar Bomba the cleanest hydrogen bomb ever detonated: 52 to 58 megatons, depending on method of measurement. The dirty version (never tested) was to have a yield of 100 megatons.
The largest megaton nuclear bomb ever built was the Tsar Bomba, developed by the Soviet Union in 1961. It had a yield of 50 megatons, making it the most powerful nuclear weapon ever detonated. Due to its immense power, the Tsar Bomba was designed with a lead tamper to limit its full yield potential.
The US does not have a 200 megaton nuclear bomb in its arsenal. The largest nuclear bomb ever tested by the US was the "Castle Bravo" with a yield of around 15 megatons. The US currently possesses nuclear weapons with a maximum yield of up to 1.2 megatons.
A pure fission atomic bomb with a yield of a megaton or more is theoretically impossible. The problem is that the chain reaction would happen spontaneously before the device could even be completely built and the bomb parts would melt, resulting in a fizzle and killing everyone building it.The first fusion atomic bomb (commonly called a hydrogen bomb) was tested in 1952 as Ivy Mike and had a 10 megaton yield. The highest yield pure fission atomic bomb ever built was also tested in 1952 as Ivy King and had a 500 kilotons yield.
The most powerful nuclear weapon in the US arsenal is the B83, a thermonuclear bomb with a maximum yield of 1.2 megatons. It is designed to be carried by strategic bombers like the B-52 and is one of the largest and most destructive nuclear weapons currently in service.
An atomic bomb is a nuclear weapon. A nuclear fusion bomb, (hydrogen, is usually much stronger than a nuclear fission bomb (uranium or plutonium). The weapons detonated in Japan during WWII measured about 15 kilotons equivalent of TNT. Today, most nuclear weapons are measured by megaton (1000X kiloton) equivalents up to a bomb built by the Russians with a possible yield of 100 megatons.
The nuclear bomb exploded with the force of several megatons of TNT, causing widespread destruction.
The US does not have a 200 megaton nuclear bomb in its arsenal. The largest nuclear bomb ever tested by the US was the "Castle Bravo" with a yield of around 15 megatons. The US currently possesses nuclear weapons with a maximum yield of up to 1.2 megatons.
The largest megaton bomb ever detonated was the Soviet Union's Tsar Bomba in 1961, with a yield of about 50 megatons. It was the most powerful nuclear weapon ever created and tested.
A pure fission atomic bomb with a yield of a megaton or more is theoretically impossible. The problem is that the chain reaction would happen spontaneously before the device could even be completely built and the bomb parts would melt, resulting in a fizzle and killing everyone building it.The first fusion atomic bomb (commonly called a hydrogen bomb) was tested in 1952 as Ivy Mike and had a 10 megaton yield. The highest yield pure fission atomic bomb ever built was also tested in 1952 as Ivy King and had a 500 kilotons yield.
The most powerful nuclear weapon in the US arsenal is the B83, a thermonuclear bomb with a maximum yield of 1.2 megatons. It is designed to be carried by strategic bombers like the B-52 and is one of the largest and most destructive nuclear weapons currently in service.
B53 nuclear bomb is nine megatons No public data is out on how large the largest megaton nuke really is but there are claims and reports that it is over 100 megatons.
That depends on the cube root of the yield. The fireball of a 10 megaton bomb reaches about 3 miles diameter.
Sorry, my nuclear bomb effects circular slide rule only goes up to 100MTon yield.
The 50 Megaton "Tsar Bomba" hydrogen bomb tested by the USSR in 1961 is the strongest hydrogen bomb ever detonated. The 10 Megaton "Ivy Mike" hydrogen bomb tested by the U.S. in 1952 is the physically largest hydrogen bomb ever detonated.
An atomic bomb is a nuclear weapon. A nuclear fusion bomb, (hydrogen, is usually much stronger than a nuclear fission bomb (uranium or plutonium). The weapons detonated in Japan during WWII measured about 15 kilotons equivalent of TNT. Today, most nuclear weapons are measured by megaton (1000X kiloton) equivalents up to a bomb built by the Russians with a possible yield of 100 megatons.
The nuclear bomb exploded with the force of several megatons of TNT, causing widespread destruction.
1945
Comparatively not that powerful. The largest Pakistan has that we suspect could be most likely no higher then a 500 kiloton nuclear warhead while the United States and Russia for example operate or have operated 30, 40, even 50 megaton nuclear devices. A 500 kiloton nuke is about 1% the power of a 50 megaton nuke. However, they operate about 70-90 nuclear warheads, making not only the weapon, but the number of them a significant nuclear deterrent for the country.