The Atomic Radius of Magnesium Is 160 Pm

question 61

Multiple Choice

The atomic radius of magnesium is 160 pm.Estimate its density,given that the metal has a close-packed structure.

• A)1.74 g  cm ^{ 3}
• B)0.435 g  cm ^{ 3}
• C)10.5 g  cm ^{ 3}
• D)4.45 g  cm ^{ 3}
• E)2.78 g  cm ^{ 3}

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Definitions:

Social Loafing

The tendency for people in a group to exert less effort when pooling their efforts toward attaining a common goal than when individually accountable.

Deindividuation

The loss of self-awareness and self-restraint occurring in group situations that foster arousal and anonymity.

Cognitive Dissonance

The mental discomfort experienced by an individual who holds two or more contradictory beliefs, ideas, or values at the same time, leading to tension and the motivation to reduce the dissonance.

Role-Playing

An educational or therapeutic technique where individuals act out roles in particular scenarios to learn, practice behaviors, or gain insight into themselves.