In which state of matter, the particles arrangement is regular and closely packed?

In which state of matter, the particles arrangement is regular and closely packed?

مادے کی کس حالت میں، ذرات کا انتظام باقاعدہ اور قریب سے بھرا ہوا ہے؟
Explanation

In a solid, the particles are arranged in a regular and closely packed manner, with a fixed position and shape.