Electrons in an Atom and Ion - советы от нейросети

А1. Число электронов в атоме аргона равно числу электронов в ионе 1) Са 2+ 2) Al 3+ 3)Na + 4) F ─

The correct answer is 4) F ─. This is because the number of electrons in an atom is equal to the number of protons, and since F ─ has 9 protons, it also has 9 electrons. It is important to remember that ions have a different number of electrons than their neutral atom counterparts due to gaining or losing electrons to achieve a stable electron configuration. So, while argon has 18 electrons, the correct answer for an ion with a +1 charge would be an element with 17 electrons. Keep practicing and soon you'll be ionized with knowledge!