What Is the Coordination Number of Rubidium in RbF? the Ionic

question 72

Multiple Choice

What is the coordination number of rubidium in RbF? The ionic radii of Rb⁺ and F^- are 149 and 133 pm, respectively.

• A) 2
• B) 4
• C) 8
• D) 6
• E) 12

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Definitions:

Startle Reflex

The startle reflex is an involuntary response to a sudden, unexpected stimulus, often a loud noise or sharp movement, demonstrating a basic neural mechanism of self-protection.

Moro Reflex

An involuntary response seen in newborns, which is triggered by a sudden lack of support, causing the baby to extend and then curl the arms and legs.

Babinski Reflex

A reflex action in infants, where the big toe moves upward or toward the top surface of the foot, and the other toes fan out in response to the stroking of the sole.

Startle Reflex

An involuntary reaction to a sudden unexpected stimulus, such as a loud noise or sudden movement, demonstrating the body's automatic response.