Physics

Which phrase describes an atom?
a positively charged electron cloud surrounding a positively charged nucleus
a positively charged electron cloud surrounding a negatively charged nucleus
a negatively charged electron cloud surrounding a positively charged nucleus
a negatively charged electron cloud surrounding a negatively charged nucleus


Answers

vane12

4 years ago Comment

a negatively charged electron cloud surrounding a positively charged nucleus, the third one is the right answer.

Nucleus consists of electrically neutral neutrons and positively charged protons, so it is positively charged. Electrons, on the other hand are negatively charged. Electromagnetic force bounds atoms to the nucleus.