Antimony (Sb), has two naturally occurring isotopes: Sb-121 that has a percent abundance of 57.30 % and a mass of 120.90 amu, and Sb-123 that has a percent abundance of 42.70 % and • Part A a mass of 122.90 amu. Calculate the atomic mass for antimony using the weighted average mass method. Express your answer using two decimal places and include the appropriate units.

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Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.