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AP Chemistry Flashcards: Valence Electrons And Ionic Compounds

Study Valence Electrons And Ionic Compounds in AP Chemistry with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

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What this deck covers

This deck focuses on Valence Electrons And Ionic Compounds, giving you a quick way to review the definitions, rules, and examples that matter most for AP Chemistry.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

AP Chemistry Flashcards: Valence Electrons And Ionic Compounds

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QUESTION

What is the chemical formula for calcium fluoride?

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ANSWER

CaF2_22​. One Ca2+^{2+}2+ balances two F−^-− charges.

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All flashcards

Flashcard 1: What is the chemical formula for calcium fluoride?

Answer: CaF2_22​. One Ca2+^{2+}2+ balances two F−^-− charges.

Flashcard 2: What is the charge of an aluminum ion?

Answer: +3. Al loses 3 electrons to achieve octet.

Flashcard 3: Which type of bond forms between sodium and chlorine?

Answer: Ionic bond. Metal transfers electron to nonmetal.

Flashcard 4: Identify the number of valence electrons in chlorine.

Answer: 7 valence electrons. Group 17 elements have 7 valence electrons.

Flashcard 5: Identify the charge on a sulfide ion.

Answer: -2. S gains 2 electrons to achieve octet.

Flashcard 6: What is the valence electron configuration of argon?

Answer: 3s23p63s^2 3p^63s23p6. Third shell configuration for argon.

Flashcard 7: What is the formula for the compound formed by K and Br?

Answer: KBr. 1:1 ratio balances +1 and -1 charges.

Flashcard 8: What is the electron configuration for a magnesium ion?

Answer: 1s22s22p61s^2 2s^2 2p^61s22s22p6. Mg2+^{2+}2+ has same configuration as neon.

Flashcard 9: What is the charge of a sodium ion?

Answer: +1. Na loses 1 electron to achieve stable octet.

Flashcard 10: What is the formula for the compound formed by Ca and Cl?

Answer: CaCl2_22​. One Ca2+^{2+}2+ balances two Cl−^-− charges.

Flashcard 11: What is the charge on a phosphide ion?

Answer: -3. P gains 3 electrons to achieve octet.

Flashcard 12: Identify the number of valence electrons in helium.

Answer: 2 valence electrons. Noble gas with complete outer shell.

Flashcard 13: How many electrons does an oxide ion have?

Answer: 10 electrons. Neutral O has 8; O2−^{2-}2− gains 2 electrons.

Flashcard 14: What is the formula for the compound formed by Na and S?

Answer: Na2_22​S. Two Na+^++ balance one S2−^{2-}2− charge.

Flashcard 15: How many valence electrons does carbon have?

Answer: 4 valence electrons. Group 14 elements have 4 valence electrons.

Flashcard 16: What charge does a chloride ion have?

Answer: -1. Cl gains 1 electron to complete octet.

Flashcard 17: What is the electron configuration of a fluoride ion?

Answer: 1s22s22p61s^2 2s^2 2p^61s22s22p6. F−^-− gains electron to match neon configuration.

Flashcard 18: How many electrons does a chloride ion have?

Answer: 18 electrons. Neutral Cl has 17; Cl−^-− gains 1 electron.

Flashcard 19: State the number of valence electrons in fluorine.

Answer: 7 valence electrons. Group 17 elements have 7 valence electrons.

Flashcard 20: How many valence electrons does oxygen have?

Answer: 6 valence electrons. Group 16 elements have 6 valence electrons.

Flashcard 21: What is the formula for the compound formed by K and Br?

Answer: KBr. 1:1 ratio balances +1 and -1 charges.

Flashcard 22: What is the electron configuration for a magnesium ion?

Answer: 1s22s22p61s^2 2s^2 2p^61s22s22p6. Mg2+^{2+}2+ has same configuration as neon.

Flashcard 23: Determine the valence electron count for phosphorus.

Answer: 5 valence electrons. Group 15 elements have 5 valence electrons.

Flashcard 24: What is the charge of a sodium ion?

Answer: +1. Na loses 1 electron to achieve stable octet.

Flashcard 25: What is the formula for the compound formed by Ca and Cl?

Answer: CaCl2_22​. One Ca2+^{2+}2+ balances two Cl−^-− charges.

Flashcard 26: What is the typical charge of a barium ion?

Answer: +2. Ba loses 2 electrons for stable configuration.

Flashcard 27: What is the charge on a phosphide ion?

Answer: -3. P gains 3 electrons to achieve octet.

Flashcard 28: How many valence electrons does argon have?

Answer: 8 valence electrons. Noble gas with complete outer shell.

Flashcard 29: Identify the number of valence electrons in helium.

Answer: 2 valence electrons. Noble gas with complete outer shell.

Flashcard 30: What is the definition of valence electrons?

Answer: Electrons in the outermost shell of an atom. These determine chemical bonding and reactivity.