Depends on yield and height/depth of burst.
8000
India has 60 to 80 nuclear warheads.
WW2 ended with the nuclear attack on Japan. The cities of Hiroshima and Nagasaki suffered the consciences of the nuclear bomb. With the United States using these powerful weapons, Russia begun research on the nuclear bomb and in a period of time, they got their nuclear bomb ready. The nations in power were in the "who got the most powerful bomb" race. The nuclear arms race was central to the Cold War. Many feared where the Cold War was going with the belief that the more nuclear weapons you had, the more powerful you were. Both America and Russia massively built up their stockpiles of nuclear weapons. The world greatly changed when USA exploded the H-bomb in 1952. This one bomb was smaller in size than the Hiroshima atomic bomb but 2500 times more powerful. The Russians produced an H-bomb in 1953 and the world became a much more dangerous place.
The 'uranium bomb' is an A-bomb and is a first generation nuclear weapon. The hydrogen bomb or H-bomb is a 2nd generation nuclear weapon and generally many times more powerful. 'H-bomb' can also refer to 3rd generation nuclear weapons that have an additional mass off uranium to provide further fuel, triggered by the 2nd generation fusion reaction; these are the most powerful. But recent studies show that the H-Bomb has more mass, therefore more energy, and therefore has more energy. So the H-bomb is more powerful.
A nuclear bomb can destroy a city and the surrounding area. Think if New York City was bomb with an atom bomb. 8 million plus people would be killed instantly and milions more would die from the fallout or burns or other injuries. Injuries would be in the millions too.
It would depend on the size of the bomb.
8000
This question is too complex to be answered here as written, it depends on:your definition of "blow up"bomb yields availableburst heights/depthsetc. for dozens of additional variables
Too many
Bomberman?
225,000
one no, many yes
they have nuclear missiles. and they have many powerful explosives. and yes massive bombs.
Took two to end WW2.
8 known, maybe 9
To say how many nuclear bombs it would take to blow up the sun is almost impossible. Actually the sun is a continuously exploding thermonuclear bomb, that's where the energy comes from - fusion. It doesn't matter how many bombs you shot into the sun, it would just get hotter.
It may take a thousand of tons on TNT to pack a nuclear bomb. But to destroy the earth, it may take billions to trillions tons of TNT plus a nuclear igniter to blow the earth to bits of dust.