Ionic Bonding CCA review

Which of these is true about the oxidation numbers of transition metals, such as chromium?

• Can have multiple positive oxidation numbers

• Can have multiple negative oxidation numbers

• Oxidation number always equal to 1+

• Oxidation number always equal to 2+

The electron structure of a neutral atom is shown below. Which notation correctly labels an ion that would form from this atom?

• Na⁻

• Mg⁺

• Na⁺

• Ne⁻

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What charge do Group 13 elements tend to acquire when they form ions?

• 3−

• 5−

• 5+

• 3+

Based on the electron-dot diagram for neon, why does neon have a very high ionization energy compared to the other elements in period 2?

• Neon has a complete octet, making it stable and requiring more energy to remove an electron.

• Neon has fewer protons than other elements in period 2, resulting in higher ionization energy.

• Neon has a larger atomic radius, which increases ionization energy.

• Neon has a lower electronegativity, leading to higher ionization energy.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Fill in the blanks using the available answer choices. An atom of magnesium has two valence electrons. An atom of magnesium will most likely react with exactly one atom of _________, which contains _________ valence electrons.

• oxygen, 6

• nitrogen, 5

• carbon, 4

• fluorine, 7

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

To achieve a noble gas configuration, oxygen requires 2 electrons, and hydrogen needs to receive how many electron(s)?

• 3

• 2

• 0

• 1

Tags

NGSS.HS-PS1-1

Based on the periodic table shown, elements from columns B and E will combine in which ratio to form an ionic compound?

• 3B:2E

• No likely combination

• 2B:3E

• 3B:1E

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of these formulas is written incorrectly?

• (NH₄)₂S

• Ca(OH)₂

• Al₂(SO₄)₃

• AlOH₃

Tags

NGSS.HS-PS1-7

Name the ionic compound represented by each formula: K₂CO₃, Mg(MnO₄)₂.

• Potassium carbonate, Magnesium permanganate

• Potassium sulfate, Magnesium oxalate

• Potassium chloride, Magnesium sulfate

• Potassium nitrate, Magnesium chloride

What is the formula for the compound made from cesium and sulfate ions?

• CsSO4

• Cs2SO4

• Cs2(SO4)3

• Cs(SO4)2