What is 'pbr3' ??? If you mean the chemical phosphorus bromide , the formula is 'PBr3'. NOTE the use of Capital letters.
Ther shape is pyrsmidal, similarl to its group analogy ammonia.
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a shape is called a shape in mathematics
That shape is called a cylinder.That shape is called a cylinder.That shape is called a cylinder.That shape is called a cylinder.
An inscribed shape is inside a circumscribing shape.
A 2 dimensional shape such as a circle is NOT a solid shape, while a sphere is.
Cylindrical shape or Cylinder shape