What makes an object positively charged, negatively charged, or neutral?

The massive nucleus of an atom consists of positively charged protons and uncharged neutrons. It is surrounded by a cloud of negatively charged electrons. Normally atoms are neutral: the number of electrons equals the number of protons in the nucleus. A negatively charged object is an object that has an excess of electrons. A positively charged object has fewer electrons than protons in the nucleus.


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