What are the bond angles in the following molecular model of PH3? 
Definitions:
Caretaker Actions
Behaviors and decisions made by an individual responsible for the caregiving and well-being of another, often involving protective and supportive measures.
Still-Face Method
A research paradigm used in psychology to assess infant-caregiver interaction, where the caregiver maintains an unresponsive, expressionless face towards the infant.
Normally Synchronous
Typically occurring at the same time or rate; processes happening simultaneously.
Distress on Separation
The anxiety and emotional turmoil experienced by individuals, especially infants and young children, when separated from significant caregivers or attachment figures.
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