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Questions and Answers
If an element forms an ion with a $3-$ charge, what does this indicate about its position on the Periodic Table?
If an element forms an ion with a $3-$ charge, what does this indicate about its position on the Periodic Table?
- It likely belongs to Group V.
- It likely belongs to Group III. (correct)
- It likely belongs to Group I.
- It likely belongs to Group VII.
Which group in the Periodic Table consists of elements that typically form $3-$ charged ions?
Which group in the Periodic Table consists of elements that typically form $3-$ charged ions?
- Group V
- Group I
- Group III (correct)
- Group IV
What characteristic of an element can be inferred if it forms X 3– ion?
What characteristic of an element can be inferred if it forms X 3– ion?
- It likely has five valence electrons.
- It likely has two valence electrons.
- It likely has one valence electron.
- It likely has three valence electrons. (correct)
Which of the following groups is unlikely to contain an element that forms an ion with a $3-$ charge?
Which of the following groups is unlikely to contain an element that forms an ion with a $3-$ charge?
Considering the properties of ions, which group should be ruled out for an element forming a $3-$ ion?
Considering the properties of ions, which group should be ruled out for an element forming a $3-$ ion?
Flashcards
Element forming X³⁻ ion
Element forming X³⁻ ion
The element X in the question forms a negatively charged ion with a 3- charge.
Group of the periodic table
Group of the periodic table
Refers to the vertical column on the periodic table. The group number usually indicates the number of valence electrons.
X³⁻ ion charge
X³⁻ ion charge
3 negative charges (X³⁻) mean the element gained 3 electrons.
Valence electrons
Valence electrons
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Group V element
Group V element
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Study Notes
Periodic Trends and Ion Formation
- Elements tend to gain or lose electrons to achieve a stable electron configuration, often resembling that of a noble gas.
- The number of electrons gained or lost determines the charge of the ion formed.
- Anion formation (negative ions like X3-) involves gaining electrons. Cations (positive ions) involve losing electrons.
Group Determination
- The group number of an element on the periodic table corresponds, in many cases, to the number of valence electrons.
- The group number, combined with the charge on the ion, gives clues about how an element reaches a stable configuration.
- The ion X3- has gained three electrons.
Predicting Group Number
- Achieving a stable configuration (often involving 8 valence electrons) is a key driving force for ion formation.
- To reach a stable configuration, the element likely has 5 valence electrons to begin with (5 + 3 = 8).
- In the context of this question, an element gaining 3 electrons suggests it is likely in Group V of the periodic table.
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