In the context of a silicon-based semiconductor, match each of the following descriptions to the type of semiconductor.
dopant: boron contains electron holes contains extra electrons dopant: phosphorus n-type semiconductors or p-type semiconductors

1.dopant:boron - p-type semiconductors 
2.contains electron holes - p-type semiconductors 
3.contains extra electrons - n-type semiconductors
4.dopant:phosphorus - n-type semiconductors

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Answer the molar mass of magnesium is 24.305g/mol.