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2. Atoms & Elements

Ions

2. Atoms & Elements

Ions

Multiple Choice
When sulfur forms an ion, does it become a cation or an anion?
Multiple Choice
Which process leads an atom to become an anion?
Multiple Choice
Which of the following has 10 electrons?
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Open Question
A Se ion has a mass number of 77 and a charge of −2
Multiple Choice
Which of the following represents the formula of the ion formed when potassium achieves a noble-gas electron configuration?
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Multiple Choice
Which of the following ions has the greatest charge density?
Multiple Choice
Which of the following is an anion?
Multiple Choice
What type of ion has lost an electron and therefore carries a positive charge?
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Multiple Choice
What happens to an atom when it loses an electron and becomes a cation?
Multiple Choice
Which statement best describes the difference between a neutral element and an ion?
Multiple Choice
Which of the following is the most stable monatomic ion formed from caesium?
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Multiple Choice
What is the charge of the metal ion in the complex ion Fe(NH_3)_2Br_4^{2-}? (Omit the + sign in your answer.)
Multiple Choice
In the compound aluminum hydroxide, Al(OH)_3, how many hydroxide ions are bonded to each aluminum ion?
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Multiple Choice
How many total electrons are present in a Sr^{2+} ion?
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Open Question
When an atom is charged, it is called an ion. How many electrons are in O^2-?