Eli5, how does the size of a nuclear weapon correlate to its output?

Question

Especially in terms of the Tsar Bomber – a relatively large weapon – which caused the biggest nuclear explosion ever. If nukes deal with atom sized particles, why does a bigger sized weapon = bigger explosion?

Unsure if correct flair but when dealing with nuclear weapons a few could apply

In: Engineering

Answer 1

I am no rocket scientist so what I understand about the size is that it still needs a standard detonation. I suppose the bigger the bomb, the larger the standard detonated explosive material will be needed compared to a smaller nuclear bomb.