If a substance has an excess number of electrons on its surface, what type of charge does it have?

A negative charge

Explanation:

If there an an excess of electrons, there'll be more electrons in the substance than the number of protons, so the object will carry a negative charge.                                                                                                                                                                                                                                                                                                                                                                              

negative charge because electron is negatively charged sub -atomic particle.

option a and d is the correct answer

i hope this u

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