How can we say an atom has 0 net charge in its ground state? Because the electrons are away from the nucleus and there is screening effect also so if we bring an charge near this atom the electrons will apply a force greater than protons right?
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As an electron gets closer to the nucleus, the (attraction/repulsion) to the nucleus (increases/decreases). ... When an electron moves from energy level five to energy level two, it moves from a (higher/lower) energy state to a (higher/lower) energy state.
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