By mass, this would be Pallas (2 Pallas), the third most massive object in the Main Belt.
The largest asteroid was Ceres, now considered a "dwarf planet" (the only one inside the orbit of Neptune). That would make Vesta (4 Vesta) and Pallas the largest of the remaining Main Belt asteroids. They are similar in size (diameter 530-565 km) but Vesta is slightly more massive.
Ceres, Vesta, Pallas, and Hygeia are the four largest objects and contain more than half of the total estimated mass of the Asteroid Belt.
CERES is the first and the biggest asteroids in the solar system
The biggest object in the solar system is the sun, and the smallest is Pluto
the meteorites are part of the solar system because they are in the asteroid belt an the asteroid belt is in the solar system
neptune
Saturn is the second largest planet in the Solar System and exhibits a large ring structure.
It is Saturn.
The asteroid belt has no stars, the solar system one.
Right after Jupiter, the largest planet in the Solar System, is Saturn.
Saturn is the second biggest planet in our solar system.
Mars is the fourth planet from the Sun in our solar system, so it's not the biggest, second biggest, or third biggest planet. The biggest planet is Jupiter, followed by Saturn (second biggest), and then Uranus and Neptune (third and fourth biggest respectively), before we get to Mars.
No. There are other asteroid belts besides the main asteroid belt in our solar system. Also, there are asteroids outside our solar system.
Depending on what you view as an asteroid. The second largest non-Dwarf Planet KBO is 2007 OR 10 (this is a fairly newly discovered object and is based on some guesswork) falling just behind Sedna. The second largest non-Dwarf Planet in the main asteroid belt is Vesta which falls only slightly behind Pallas. However, Vesta has more mass.