Magnesium Sulfide (Molar Mass 56

question 46

Multiple Choice

Magnesium sulfide (molar mass 56.37 g/mol) has a face-centered cubic unit cell with magnesium ions in octahedral holes.The ionic radii of magnesium ions and sulfide ions are 79 pm and 184 pm,respectively.What is the density of MgS (in g/cm³) ?

• A) 1.29 g/cm³
• B) 2.57 g/cm³
• C) 3.64 g/cm³
• D) 5.15 g/cm³
• E) 7.28 g/cm³

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Definitions:

Storage Class

A classification in programming that determines the lifetime and scope of variables or functions.

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Variables that are declared inside a function or block and can only be accessed within that function or block.

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In programming, "automatic" refers to variables that are automatically allocated and deallocated by the compiler, typically stored on the stack.