Question #74309

1 Answer
Junaid Mirza
Nov 6, 2017

4×10−18 Coulomb

Explanation:

  • Protons are positively charged particles with charge of +1.6×10−19 Coulomb/proton
  • Electrons are negatively charged particles with charge of −1.6×10−19 Coulomb/electron
  • Neutrons are neutral

Protons and neutrons are present inside the nucleus. Electrons revolve around the nucleus.

Charge of nucleus =25×1.6×10−19C=4×10−18C

Therefore nucleus is positively charged (because of the presence of 25 protons inside the nucleus) and atom is neutral (because 25 protons are positively charged and 25 electrons are negatively charged).

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