A black hole has more mass than a neutron star, but if you are comparing volume it would depend on the mass of the black hole. A neutron star is estimated to be about 14 miles in diameter, which is larger than the event horizon of a black hole up to about 3.8 times the mass of the sun. A more massive black hole will be larger.
No, black holes cannot turn into neutron stars. Neutron stars form from the remnants of supernova explosions of massive stars, while black holes are formed from the gravitational collapse of massive stars. Once a black hole is formed, it will remain a black hole and will not transform into a neutron star.
A neutron star or a pulsar, or a black hole.
when a star dies
When it turns into a black dwarf neutron star or black hole.
A black hole or a neutron star.
Either a neutron star or a black hole.
Depending on the size of the star: a neutron star or a black hole-
Neutron star -- then black hole
* white dwarf * neutron star * black hole
about 1/3 of a neutron star
after a neutron star collapses on itself
The factor that determines whether a neutron star or a black hole forms after a supernova explosion is the mass of the collapsing core of the star. If the core's mass is between about 1.4 and 3 times the mass of the sun, a neutron star is formed. If the core's mass exceeds about 3 solar masses, a black hole is likely to form.