This is a reduction reaction as the oxide(oxygen) is taken away from the metal =]
Explanation:
The electrical force between two objects is given by the formula as follows :

k is electrostatic constant
q₁ and q₂ are electric charges
d is distance between charges
So, the two force between two charged objects depends on the product of charges and distance between charges.
Answer:
boron (B), germanium (Ge), and tellurium (Te)
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