The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ________ amu. 
Definitions:
Authoritative Command
A leadership style characterized by clear direction and expectations while allowing input and respecting subordinates.
Domain Ambiguities
Unclear boundaries or definitions within a specific area of knowledge or expertise.
Structural Differentiation
The process within organizations where departments or units become specialized in their functions, leading to a more complex organizational structure.
Task Interdependencies
The extent to which tasks in a project or within an organization rely on each other for resources, information, or completion.
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