o. Constants | Periodic Table Part A A main group metal tends to lose electrons,
ID: 1035824 • Letter: O
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o. Constants | Periodic Table Part A A main group metal tends to lose electrons, forming a cation with the same number of electrons as the nearest noble gas in the periodic table. A main group nonmetal tends to gain electrons, forming an anion with the same number of electrons as the nearest noble gas, The various groups gain or lose electrons as summarized in the following table Part B This question will be shown after you complete previous question(s). Part C A certain element forms an ion with 18 electrons and a charge of +2. Identify the element. Express your answer as a chemical symbol View Available Hint(s) Group 1A 2A 3A SA 6A 7A 8A TendencyCharge Lose one electron Lose two electrons Lose three electrons Gain three electrons Gain two electrons Gain one electron Rarely gain or lose electrons +1 +2 +3 -3 -2 0 Submit Provide Feedback Next >Explanation / Answer
The element is Calcium = Ca
Atomic number of Calcium = 20
so it contains 20 e-.
Calcium atom looses two electrons and converts to its cation is Ca+2.
Ca+2 contains 18 electrons.
The element is Ca.
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