Element A has two isotopes. The first isotope is present 34.69% of the time and has a mass of 144.65. The second isotope has a mass of 119.15. Calculate the atomic mass of element A. Record answer in correct number of significant figures. Hint: see example 2.4 in your textbook.

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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.