2. Atoms & Elements

Ions

Multiple Choice
One isotope of a metallic element has a mass number of 65 and 35 neutrons in the nucleus. The cation that this atom forms has 28 electrons. What is the symbol of the cation?
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Multiple Choice
Which of the following is the symbol for the ion with a +4 charge, 30 neutrons and 21 electrons?
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Open Question
Fill in the gaps for the following table.
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Multiple Choice
Which of the following statements is false?
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Multiple Choice
Which of the following would most likely form an anion with a 2– charge?
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Multiple Choice
Which of the following has 10 electrons?
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Open Question
A nitride ion has 7 protons, 8 neutrons, and 10 electrons. what is the overall charge on this ion?
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Open Question
When electrons are removed from the outermost shell of a calcium atom, the atom becomes?
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Open Question
An atom that gains or loses an electron has a net electric charge and is called a/n.
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Open Question
When an atom is charged, it is called an ion. How many electrons are in O^2-?
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Open Question
Atoms with the same number of protons but with different electrical charges are ____.
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Open Question
Which describes an atom that has fewer neutrons than protons and more electrons than protons?
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Open Question
Which of the following species are isoelectronic with ne?
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Open Question
In which of the following sets do all species have the same number of electrons?
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Open Question
Write the chemical symbols for three different atoms or atomic cations with electrons.
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